The cube, rectangular prism, cylinder, cone, pyramid, and sphere are the fundamental geometric shapes for which volume formulas are known.
Which object had the largest volume?An object's volume is the amount of space it occupies. Cubic meters are used to measure large volumes (m3). Cubic centimeters (cm3) or cubic millimeters are used to measure smaller volumes (mm3). For instance, a cup is said to have a 100 ml capacity if its brim can carry 100 ml of water used to describe volume. The 3-dimensional space inhabited by matter or encircled by a surface is measured by its volume.
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One gram of sodium chloride will take longer to dissolve in a solution of 2 m glucose than in a solution of pure water. What is the most reasonable explanation for this observation?.
One gram of sodium chloride takes longer to dissolve in a solution of 2M glucose than in pure water. This is because diffusion happens faster in pure water than in a solution containing a solute i.e. glucose and thus it will take longer to dissolve as a result of large number of collisions.
If you were to put 1 gram of sodium chloride (NaCl) in a beaker of pure water, it would eventually dissolve. However, if you dissolve same amount of sodium chloride (NaCl) in a beaker of water containing 2 moles of glucose, sodium chloride would take longer to completely dissolve.
The reason for this is that, in a solution having more molecules, the sodium chloride would experience more collisions. Due to this, the rate of diffusion will slow down, and thus, sodium chloride will take longer to completely dissolve.
To put it simply, solutions having large number of molecules present exhibit slower diffusion rate than solutions with fewer molecules present. So, if you want the sodium chloride to dissolve quickly, the best way is to put it in a solution of pure water.
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Polyacrylamide is a water-soluble polymer whose aqueous solution containing 25 g/l develops an osmotic pressure of 0. 54 torr at 25◦c. Find the approximate molecular weight of the polymer sample.
By ideal gas approximation, the molecular weight of the polymer sample is 861471.83 grams.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (0.0821 atm.L/mol.K) and T is temperature.
From the question above, we know that
ρ = 25 g/L
P = 0.54 torr = 0.00071 atm
T = 25⁰ C = 298 K
We can change the number of moles to density form
P . V = n . R . T
P . V = gr/(Mr polyacrylamide) . R . T
Mr polyacrylamide = ρ . R . T / P
Mr polyacrylamide = 25 . 0.0821 . 298 / 0.00071
Mr polyacrylamide = 861471.83 gram
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How is the orbital configuration of neutral atoms related to the atom’s chemical properties?
Responses
A Chemical properties of the atom can be shown through the orbital configuration due to the interaction of its protons with other atoms.Chemical properties of the atom can be shown through the orbital configuration due to the interaction of its protons with other atoms.
B Orbital configuration predicts the crystalline nature and structure of the atom and shows the structure formed as these atoms join together.Orbital configuration predicts the crystalline nature and structure of the atom and shows the structure formed as these atoms join together.
C Atom properties can be explained and defined through the orbital configuration and structure of the element's nucleus and its interactions.Atom properties can be explained and defined through the orbital configuration and structure of the element's nucleus and its interactions.
D The atom's orbital configuration shows the number of valence electrons present and predicts the number and types of bonds the atom will form.
option D is correct. The atom's orbital configuration shows the number of valence electrons present and predicts the number and types of bonds the atom will form.
What is atomic orbital configuration?A three-dimensional representation of an electron's most likely position within an atom is called an orbital.
The number and type of bonds that an atom is expected to make are among the chemical features of an atom that can be predicted using the orbital configuration of neutral atoms.
it Determines which atom will create the most bonds by using the orbital diagrams. Alkaline earth metal atoms combine with other elements to produce compounds.
So, thus we can say that The atom's orbital configuration shows the number of valence electrons present and predicts the number and types of bonds the atom will form.
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Could someone please help me with this?
B. The final speed of the ball when it hits the ground is determined as 24.2 m/s.
Final speed of the ballThe final speed of the ball can be determined by applying the principle of conservation of energy as follows;
K.E = P.E
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
v is the maximum velocity of the ballh is the initial height of the ballg is acceleration due to gravitySubstitute the given parameters and solve for the maximum speed of the ball.
v = √(2 x 9.8 x 30)
v = 24.2 m/s
Thus, the final speed of the ball when it hits the ground is determined as 24.2 m/s.
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I NEED HELP ASAP
When the polyatomic ion (SO2)-2 combines with the iron (III) ion, Fe+3, the formula for the compound is...
Select one:
a. FeSO4
b. Fe2SO4
c. Fe2(SO4)3
d. Fe3(SO4)2
Answer:
Iron(III) sulfate (AKA Fe2(SO4)3)
Explanation:
If Jill has a 2.9L of gas at a pressure of 5.5 atm and a temperature of 50˚C. What will be the temperature of the gas if I decrease the volume of the gas to 2.4L and decrease the pressure to 3.3 atm? Show work please!
The final temperature of the gas is determined as -112.6 ˚C.
What is the final temperature of the gas?
The final temperature of the gas is calculated by applying general gas equation as shown below;
V1P1/T1 = V2P2/T2
where;
V1 is the initial volume of the gasV2 is the final volume of the gasP1 is the initial pressure of the gasP2 is the final pressure of the gasT1 is the initial temperature of the gas = 50˚C = 50 + 273K = 323 KT2 is the final temperature of the gas = ?Substitute the given parameters and solve for the final temperature of the gas.
T2 = (V2P2T1)/(V1P1)
T2 = (2.4 x 3.3 x 323)/(2.9 x 5.5)
T2 = 160.38 K
In degrees Celsius = 160.38 - 273 = -112.6 ˚C
Thus, the final temperature of the gas is determined as -112.6 ˚C.
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A 5. 00 gram sample of lead and a 3. 20 g sample of iron are placed into 367 ml of water. What will be the new volume level of water in units of ml? the density of lead is 11. 34 g/cc and the density of iron is 7. 874 g/cc. Do not enter ""ml"" as part of your answer.
The water now has a volume of 367.84 ml.
How to find the new volume?Density = Mass/Volume
The mass of the lead sample = 5 gm
The mass of the iron sample = 3.2 g
The volume of the water = 367 ml
The density of lead = 11.34 g/cc
The density of iron = 7.874 g/cc
The volume of the lead = Mass of lead/Density of lead = 5/11.34 = 0.441ml
The volume of lead is 0.441ml.
The V of iron is,
V = m/d = 3.2/7.874 = 0.406 ml
The volume of iron is 0.406 ml.
The water sample's new volume level is
367 + 0.441 + 0.406 = 367.84 ml, where
the new volume equals the original water volume plus the lead and iron amounts.
The water now has a 367.84 ml new volume level.
As a result,
367.84 is the new volume level of the water without the unit.
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how would a larger crystal sodium chloride be similar to the model of the crystal?
The larger crystal sodium chloride could be represented perfectly by the use of the model of the crystal.
What is a crystal?A crystal is an arrangement of the ions in are found in an ionic substance. We know that ions are contained in crystals and that these ions are arranged in a definite pattern such that we have a crystal structure that is definite. The ions are arranged in a regular repeating pattern and models of the crystal could be shown in;
A ball and stick model
A space filling model.
Thus, a larger crystal could be replicated by a model. Note that the model serves the purpose of both explanation and predication of the properties of the sodium chloride crystal.
In the model, the sodium ions are arranged in alternate position with the chloride ions. The continuous network of the alternate ions in the system is the determinant of the properties of the system.
In a model, it is common to represent each of the ions in the system by the use of dots. The dots often have differing colors.
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How many kilograms of dry air are in a room that measures 15.0 ft by 18.0 ft by 8.00 ft? Use an average density of air of 1.168 g/L. There are 30.48 cm in one foot.
(THIS IS A DIMENSIONAL ANALYSIS QUESTION)
The number of kilograms of dry air in the room that measures 15.0 ft by 18.0 ft by 8.00 ft is 71.44 Kg
We'll begin by obtaining the volume of the room. This can be obtained as follow:
Dimension = 15.0 ft by 18.0 ft by 8.00 ftVolume =?Volume = dimension
Volume = 15.0 ft × 18.0 ft × 8.00 ft
Volume = 2160 ft³
Multiply by 28.3168 to express in liter
Volume = 2160 × 28.3168
Volume = 61164.288 L
How to determine the mass of dry airVolume of room = 61164.288 LDensity of air = 1.168 g/LMass of dry air =?The mass of the dry air can be obtained as follow:
Density = mass / volume
Cross multiply
Mass = Density × Volume
Mass of dry air = 1.168 × 61164.288
Mass of dry air = 71439.89 g
Divide by 1000 to express in kilograms
Mass of dry air = 71439.89 / 1000
Mass of dry air = 71.44 Kg
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SOMEONE, PLEASE ANSWER MY CHEMISTRY QUESTION ASAP WILL MARK BRAINLIST ASAP
Answer:
Whats the question? I can try and help you
Explanation:
Energy and Temperature Activity Worksheet
Instructions: Follow the directions below to complete part one and part two of this activity. You will submit both parts once completed.
Note: You are not performing the experiment—only designing it.
Introduction
The purpose of this assignment is to design an experiment that another student could follow and use to test whether land or water heats faster.
You will complete the following:
Part One: Experimental Design. Plan out an experiment by answering the guiding questions below.
Part Two: Design a Lab Report. Write the outline of a lab report so that another student could complete the experiment by using the materials listed below:
sand
water
heat lamps
thermometers
cups
Part One: Experimental Design
Use these guiding questions to create the experiment. Answer each question below:
What hypothesis will the experiment test?
expecting which will be faster land or water
What are the variables?
dependent
What purpose would the sand serve?
What purpose would the water serve?
What purpose would the heat lamps serve?
What purpose would the thermometers use?
How can you use these materials to test whether land or water heats faster?
How would you compare whether land or water heats faster?
Within a 24-hour period, at what three points should the temperature be taken? Why?
What would an effective conclusion need to include?
Part Two: Design a Lab Report
Once you have designed the experiment, you must write out the instructions so another student could act as the experimenter and follow them. Fill in the following elements of this lab report as described in italics below.
Lab Report
Objective
Explain the purpose of your lab.
Procedure
List the experiment procedures. Some steps have been filled in for you. You may need to adjust the numbers to match the steps you decide on.
Identify the variables.
Write out your hypothesis in an if/then format.
Gather your materials.
Analyze the data.
Analyze the data.
Data Analysis
Label a data table so that the experimenter can record observations for the sand and water temperatures at various points.
Conclusion
Explain what the experimenter should include in this section to show how the data proved the hypothesis.
Answer:
the experimenter should include an observater and an analysis
Explanation:
Answer:
The part 1 of the experiment designed to test whether land or water heats faster is answered below for each and every questions.
1 ) The experiment will test whether land or water heats faster
2 ) The independent variable of this experiment is sand, water and heat lamps and the dependent variable is the rate of heat transfer.
3 ) The sand represents the land part of the hypothesis
4 ) The water represents the water body part of the hypothesis
5 ) The heat lamps represent the sun which provided heat
6 ) The thermometers will be used to measure the temperature
7 ) It could be set up such a way that the sand and water receives equal amount of heat from the lamps for an equal amount of time.
8 ) The temperature can be measured using the thermometer to see whether the land or water has gained more heat. Whichever has gained more heat, heats faster.
9 ) Within a 24-hour period, the three points, the temperature be taken are at 8 hours, 16 hours and 24 hours. Because the temperature should be taken at a steady rate of time.
10 ) An effective conclusion would include the facts that proves the hypothesis.
Therefore, the part 1 of the experiment designed to test whether land or water heats faster is answered above
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a(n) is the fundamental particle of matter, and any further breakdown of this would result in loss of the properties that are unique to its element.
An Atom is the fundamental particle of matter, and any further breakdown of this would result in loss of the properties that are unique to its element.
What is an atom?The smallest piece of matter with all of an element's chemical properties is an atom. Neutrons, protons, and electrons make up an atom's three constituent parts. The atom's nucleus is a compact, positively charged core made up of protons and neutrons, and is surrounded by an electron cloud, which is made up of negatively charged electrons.
What are the properties of an atom? The mass of protons and neutrons is roughly equal to 1.67 × 10−24 grams defined as one atomic mass unit. Because electrons only weigh 9.11 × 10−28 grams or about 1/1800 of an atomic mass unit. they have a far lower mass than protons.The protons in an atom are indicated by the atomic number. How many protons and neutrons there are in an atom determines its atomic mass. The number of neutrons can differ amongst atoms of the same element, even while all of their protons are the same. Isotopes are the name given to such atoms.The number and configuration of electrons within the electron cloud determine how an atom will behave chemically.The atomic number (number of protons) and the number of neutrons(neutron number) together determine an element's nuclear properties (atomic mass, nuclear cross-sections).
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How would you describe the bond that exists between two oxygen atoms to make the o2 molecule? how many lone pairs are present on each individual oxygen atom?.
The bond that exists between two oxygen atoms to make the O2 molecule is described as two covalent bonds and two lone pairs of electrons are present on each individual oxygen atom.
A double bond in chemistry is a covalent bond between two atoms that involves four bonding electrons, rather than two as in a single bond.
In the oxygen molecule, O2, the oxygen atoms that make up the molecule are bonded together by sharing two pairs of electrons. Each oxygen atom has 6 valence electrons, if they share two of their valence electrons with each other, they each have 8 valence electrons.
In this way, the so-called octet rule is fulfilled, where atoms gain, lose or share electrons with other atoms to have 8 valence electrons and thus acquire a noble gas configuration.
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons
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what does ethanoic anhydride and salicylic acid produce
Answer:
Aspirin
Explanation:
I'm doing the same unit in biology
if a piece of rock has a volume of 0.73 l and a mass of 1524 g what is the density
Answer: 2.1 g/mL
Explanation:
Is USA in the North or South American Plate? I'll mark you as brainliest
Answer: USA is on the North plate American!
Explanation:
The lifting force on an airplane's wing does which of the following?
bro pleas can explane me why is so hard
Explanation:
Calculate the average atomic mass of the following isotopes of Magnesium:
Isotope: % Abundance
Magnesium-22.5 78%
Magnesium- 25.3 13%
Magnesium-24.6 9%
The average atomic mass of isotopes of magnesium is 23.4 amu
To get the average atomic mass we have to multiply mass of each isotopes to the % of abundance and then add and divided by 100.
Isotope of magnesium given as,
1) 22.5 amu has an abundance of 78%
= (22.5 × 78 ) = 1755.0
2) 25.3 amu has an abundance of 13 %
= ( 25.3 × 13 ) = 328.9
2) 24.6 amu has an abundance of 9 %
= ( 24.6 ×9) = 221.4
The average atomic mass of magnesium will be
= (1755.0 + 328.9 + 221.4 ) /100
= 23.4 amu
Thus,The average atomic mass of isotopes of magnesium is 23.4 amu
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3.How does the Figure 2 model connect to phenomena?
4.Do you think the model shown in Fiqure 2 is useful?
Explain why or why not.
The model as shown in useful in the explanation of reflection.
What is a model?The term model refers to that which represents reality. A model could be used for the purpose of explanation or for the purpose of prediction. It is used to show how there are connections in real life.
Now let us examine the model as shown. We can see that this is a model of reflection. The image of the ball can be seen on the mirror because light that falls on the ball is reflected towards the mirror.
This model is very useful in the description of the the phenomenon of reflection in the real life.
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A(n) is a deep valley on land that forms along a divergent boundary
Along the diverging boundary, a deep valley known as a rift valley develops.
What is valley ?A valley is a long, low terrain that frequently stretches between hills or mountains. It usually has a river or stream that flows from one end to the other.
The majority of valleys are created by rivers or streams eroding the land's surface over a very lengthy period of time.
A valley is a low area of ground between hills, particularly one through which a river flows.
In "triple junctions," a type of divergent boundary where three tectonic plates collide at angles of around 120°, several rift valleys are found.
Thus, along the diverging boundary, a deep valley known as a rift valley develops
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7 types of chemistry
Answer:
Organic Chemistry.
Inorganic Chemistry.
Physical Chemistry.
Analytical Chemistry.
Stereochemistry.
Biochemistry.
Geochemistry.
Forensic Chemistry.
Explanation:
Question:
7 types of chemistry
Answer:
Inorganic Chemistry, Physical Chemistry, Analytical Chemistry, Stereochemistry, Biochemistry, Geochemistry, and Forensic Chemistry.
Explanation:
Inorganic chemistry is a branch of chemistry that deals with inorganic compounds. Physical chemistry is the branch of chemistry concerned with the application of the techniques and theories of physics to the study of chemical systems. Analytical chemistry studies and uses instruments and methods to separate, identify, and quantify matter. Stereochemistry is the branch of chemistry concerned with the three-dimensional arrangement of atoms and molecules and the effect of this on chemical reactions. Biochemistry is the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms. Geochemistry is the study of the chemical composition of the earth and its rocks and minerals, and Forensic chemistry is the application of chemistry and its subfield, forensic toxicology.
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Where does a spring in a ball point pen or a pogo stick get its energywhen an object moves, where does the energy come from?
A Jumping motion a spring in a ball point pen or a pogo stick get its energy. Energy that a moving object has due to its motion is Kinetic Energy.
Is there a motion involved in jumping?The human body is no different than any other object in that it must obey the laws of physics, and Newton's laws of motion apply when jumping. To achieve the highest possible jump height, an athlete attempts to vertically accelerate his body as quickly as possible.A jump from a plié in rest is less effective than a jump that moves into and out of the plié in a single smooth motion. Jumps can also be done in a horizontal motion. Trajectories, or paths of motion through space, are produced by these moves. Friction and gravity are two of the many forces at work here.
Kinetic energy:
Kinetic energy (KE) is the energy of a moving body, which means it is essentially the energy of all moving objects. It is one of the two major types of energy, the other being potential energy, which is the stored energy within objects at rest.Start working the ability of kinetic energy to do work is perhaps its most important property. Work is defined as force acting in the direction of motion on an object. Work and energy are so inextricably linked that they can be used interchangeably.
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The energy is kinetic energy. In a jumping motion a spring in a ballpoint pen or a pogo stick gets its energy when an object moves.
What is kinetic energy?A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its characteristics.
Kinetic energy is the force that propels motion, which can be seen in the movement of a particle, an object, or a group of particles.
A person walking, a baseball being thrown, a piece of food falling from a table, and a charged particle in an electric field are all instances of objects in motion that use kinetic energy.
Kinetic energy (KE) is determined by multiplying the mass of an item (1/2*m) by the square root of its velocity.
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If 6. 000 g of sugar is mixed with 9. 000 g of water, what is the concentration in weight percent?.
The concentration in weight percent when 6 g of sugar is mixed with 9 g of water is 40%.
There are several ways to denote the concentration of a solution like
Molarity MolalityMass percentMole FractionThe formula for calculating mass percent is as follows
Mass per cent = (Mass of solute/Mass of solute + Mass of solvent) x 100%
In the given situation sugar is the solute and water is the solvent.
Putting the given values in the above formula
Mass per cent = (6/6+9) x 100%= 6/15 x 100% = 40%
Hence, the concentration in weight percent when 6 g of sugar is mixed with 9 g of water is 40%.
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Al(NO3)3 + Na(OH)
Determine the type of reaction then complete the reaction, by writing the product.
High school chemistry
Answer:
Double replacement reaction, Al(OH)3 + Na3(NO3)
Explanation:
1) We can see that there are 2 compounds that contain 2 elements. This means we have a double replacement reaction.
2) Make the products
Take the elements on the outside of the equation
Al+3 and (OH)-1
criss cross the charges and you get
Al(OH)3
Now do the same with the remaining elements
Na+1 (NO3)-3
Na3(NO3)
Al(OH)3 + Na3(NO3)
Which TWO statements CORRECTLY describe a trend in physical or chemical properties for the elements shown in the Periodic Table?
Responses
A>The chemical properties of all the elements present in each period are similar.
B>The chemical properties of all the elements present in each period are similar.
C>The chemical properties of the elements present in each group are similar.
D>The chemical properties of the elements present in each group are similar.
E>The ionic radii of elements increases moving from right to left across a period of the Periodic Table.
F>The ionic radii of elements increases moving from right to left across a period of the Periodic Table.
D and E are correct statements
If you were to do a 50% serial dilution, starting with a 10% concentration, how many dilutions would you have to make before getting to 2. 5% as your final concentration?.
The number of dilutions needed to be made before getting to 2.5 % as the final concentration would be 2.
We are given that, we have to do 50% serial dilution, which means that after every dilution the concentration reduces to half of its initial value.
On starting with 10% concentration, the concentration after one dilution would be 5%.
After diluting it two times, the final concentration would be half of 5% i.e 2.5%.
Thus, the number of dilutions needed to be made before getting to 2.5 % as the final concentration would be 2.
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The density (mass per volume) of most liquids increases as the __________ is lowered.
The density (mass per volume) of most liquids increases as the temperature is lowered.
When the temperature is lowered, most liquids become denser (mass per volume). Density decreases as temperature rises more. Density rises with a drop in temperature.
Most liquids expand in volume as the temperature rises, which causes the density of the liquids to decrease. Similar to this, as temperature drops, most liquids lose volume, increasing density.
The molecules of a liquid or gas move more quickly, collide, and spread apart when it is heated. The molecules take up more space because they are dispersed widely. Their density is lower. Whenever a liquid or gas is cooled, the opposite happens.
When a substance is heated, the molecules move faster and slightly farther apart, taking up more space and causing the density to decrease. When something is cooled, the molecules slow down and get a little closer together, taking up less space and becoming denser.
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the following list contains several properties of ethylene (a ripening agent for bananas). which are physical properties and which are chemical properties?
The list contains several belongings of ethylene( a growing agent for bananas). The properties shown by the given substance is :
Physical property is a kind of property that's measureable. It explains the state of the given substance or patches. Generally shows odor, color, texture, viscosity etc.
1. Tintless
2. Odorless
3. Gas at room temperature
4. Mixes with acetone
5. 1 L has a mass of1.260 under standard conditions
Hence the physical properties are tintless , odorless, gas at room temperature, one liter has a mass of1.260 under standard conditions, mixes with acetone.
Chemical property : A chemical property is defines as the material's belongings that is seen or observed in between the chemical reactions.
1. ignitable
2. polymerizes to form polyethylene
The given question is incomplete the complete question would be :
The ensuing list contains several belongings of ethylene (a growing agent for bananas). which are physical belongings and which are chemical properties?
Tintless
Odorless
Ignitible
Gas at room temperature
1 l has a mass of 1.260 under standard conditions
Mixes with acetone
Polymerizes to form polythene
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The maximum oxygen uptake is known as the __________. a. vo2 max b. ox max c. ox3 max d. vo max please select the best answer from the choices provided. a b c d
Option a. The maximum oxygen uptake is known as the VO2 max.
This means that the maximum amount of oxygen that one's body can take during the exercise is VO2 max.
An exercise is an aerobic activity that requires oxygen more than normal activities due to a lot of physical effort.
When people exercise, their breathe heavily because the body needs more oxygen.
During this process, the ATP empowers the cells to release CO2 that produces during the respiratory process when we exhale.
So the greater the VO2 max is, more will be the benefits. As the body can consume more oxygen, the maximum amount of ATP energy is generated.
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what kind of noncovalent interaction is typified by interactions between two molecules that are so close together that they can experience weak attractive forces bonding them together?
Van der Waals forces. Van der Waals forces are very weak forces between two very close surfaces.
Forces of van der Waals. When two surfaces are very close to one another, van der Waals forces are very weak.
Is the Van der Waals weak?In gases, liquefied and solidified gases, and nearly all organic liquids and solids, neutral molecules are drawn to one another by van der Waals forces, which are relatively weak electric forces.
Van der Waals interactions are nonionic forces that have a comparatively low energy of 0.5 to 1 kcal/mol.
The covalent link from its less electronegative Neighbour atom tends to drive the electron cloud toward neutral molecules with electronegative atoms like oxygen and nitrogen.
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