Answer:
83 ML glucose
Explanation:
A 4g book a 7kg lamp both in the living room
The distance between them is 2.5 m.
What is the distance of separation?Now we know that the Newton's law of gravity said that the gravitational force of attraction between two objects is directly proportional to the product masses of the objects and inversely proportional to the distance of separation.
Now, given that;
F = Gm1m2/r^2
F = gravitational force
G = gravitational constant
m1 = mass of the book
m2 = mass of the lamp
r = distance of separation
r = √ Gm1m2//F
r = √6.67 * 10^-11 * 4 * 7/2.99 10^-10
r =2.5 m
Learn more about gravity:https://brainly.com/question/13634821
#SPJ1
Missing parts;
A 4 kg book and a 7 kg lamp are both in the living room. If the force of gravity between them is 2.99 10-10 N, how far apart are they?
Arrange these ions according to ionic radius
Largest to smallest
As3-
Rb+
Sr2+
Se2-
Br-
Largest to smallest ionic radius
As3- > Se2- > Br- > Rb+ > Sr2+ ( ionic radius)
ionic radius is the distance between nucleus of an ion and the point up to which the nucleus has influence on its cloud. measured in nm pm or angstromstrend for ionic radius is the moving down ionic radius increases. left to right, the ionic radius of cations anions and atoms forming ionic bonds decreaseselectron affinity is the specific measure of the energy released when an electron is added to an atom. along the period- increases left to right and along group- decreases down, as lectron affinity increases radius decreaseselectronegativity is quantitive measure of the electron attracting ability in a molecule , along a period- electronegativity increases across and along group - decreases down, as electronegativity inreases radius decreasesTo know more about ionic radius visit :
https://brainly.com/question/6637706
#SPJ9
Which element has an outer energy level that is almost full of electrons? O radium O carbon O krypton O iodine
Explanation:
Hi, I think the answers Iodine.
hope it helps
a mole of LiF(s) contains 2 moles of ions
1 mole of LiF has 2 moles of ions. Therefore, the given statement is true.
1 mole of LiF (s) contains 1 mole of [tex]Li^+[/tex] ion and 1 mole of [tex]F^-[/tex] ion.
So, total 2 moles of ions are present.
One fluorine (F) atom and one lithium (Li) atom can interact to produce the chemical compound Lithium Fluoride, or LiF.
LiF is an inorganic substance. It is a colorless solid that becomes white as the size of the crystals decreases. Lithium fluoride doesn't have an odor, but it tastes salty and unpleasant. Although it has a structure similar to sodium chloride, it is substantially less soluble in water. This is mostly due to LiF's stronger ionic nature. The ratio of lattice energy to hydration energy determines a compound's solubility in water.
Thus, the statement is true.
The complete question is:
A mole of LiF(s) contains 2 moles of ions. State whether the statement is true or false.
Learn more about Lithium fluoride (LiF) here:
https://brainly.com/question/3795082
#SPJ9
Determine the number of atoms in 27.0 grams of calcium, Ca. (The mass of one mole of calcium is 40.08 g.)
You are given the mass of calcium and you are trying to determine the number of atoms. You do not have anything that converts directly from mass to atoms. But what you can do Is use the molar mass to convert two moles. And then use avocado dress number to convert to atoms. So that's the plan that you are going to follow. So you need to start with the massive calcium that we you are given. Which is 61.0 g of calcium. So the first step is to use the molar mass of calcium to convert two moles. You are given the Molar Mass. You told that one mole of calcium Is 40.08 g. If you were not given this information, you could find it on the periodic table. All. you know that you wanted grams and the denominator because you want grams to cancel. Right? So, that's your first step. You are now at moles of calcium. So now you need to convert to Adams. You should do that by using avocados. Number one mole of calcium or one mole of anything Is equal to 6.2 Times 10 to the 23rd particles. In this case, those particles will be atoms of calcium. So moles of calcium will cancel. And now you just need to calculate our answer rounding it to three significant figures. Because the measurement you were given for the mass has three significant figures. So do 61.0 divided by 40.08. And multiply by 6.02 times 10 to the 23rd. Rounding that 2, 3 significant figures, that's 9.16 Times 10 to the 23rd atoms of calcium. And that is our final answer. 9.16 times 10 to the 23rd calcium atoms.
What is the product of radioactive decay %e called?
• A. A gamma wave
• B. Nuclear fission
. c.
An alpha particle
• D.
A beta particle
Answer:
alpha particle
Explanation:
I'm pretty sure it's supposed to be "daughter", but I see that it's not a choice so my second best choice would be alpha particle
If a normal dose CT scan delivers 700 mrem of radiation, how many CT scans would a
patient have to have to feel mild radiation sickness (50 rem)? Please help
The number of CT scans that a patient will have to undergo in order to feel mild radiation sickness would be 72 CT scans
Dimensional analysisThe normal dose CT scan delivers 700 mrem.
700 mrem = 700 x [tex]10^{-3}[/tex] rem
700 x [tex]10^{-3}[/tex] rem is equivalent to 0.7 rem.
In order for a patient to feel mild radiation sickness, 50 rem is needed.
If 1 CT scan is equivalent to 0.7 rem, then how many CT scans will give 50 rem?
= 50 x 1/0.7
= 71.429 scans
Since CT scans cannot be a fraction, we then need to approximate to the nearest whole number.
Thus, a total of 72 CT scans will be required for a patient to have a feeling of radiation sickness.
More om dimensional analysis can be found here: https://brainly.com/question/13078117
#SPJ1
A solution of sodium hydroxide was titrated against a solution of sulfuric acid. How many moles of sodium hydroxide would react with 1 mole of sulfuric acid? (Hint: It may help to write out a balanced symbol equation for the reaction. The chemical formulas of the acid and alkali are shown below.)
2 moles of sodium hydroxide are required to react with 1 mole of sulfuric acid.
What is stoichiometry?
Stoichiometry refers to the relation which exists between quantities of reactant and products.It is based on the law of conservation of mass where the mass of the reactants is equal to the mass of the products.Conclusion which can be made by this statement is that reactants and products form a ratio of positive integers.
Considering the reaction between sodium hydroxide and sulfuric acid given in the question number of moles of sodium hydroxide can be found out that are required to react with 1 mole of sulfuric acid using stoichiometry concept.
H₂SO₄+2 NaOH[tex]\rightarrow[/tex]Na₂SO₄+ 2 H₂O
From the reaction it is clear that 1 mole of sulfuric acid reacts with 2 moles of sodium hydroxide
Therefore,1 mole of sulfuric acid would react with
1×2/1=2 moles of sodium hydroxide.
Thus, 2 moles of sodium hydroxide react with 1 mole of sulfuric acid.
Learn more about stoichiometry, here:
https://brainly.com/question/14935523
#SPJ1
How are elements organized in the periodic table?
A. By decreasing abundance
OB. By decreasing reactivity
OC. By increasing atomic number
OD. By increasing atomic mass
The elements are organized in the periodic table By increasing the atomic number.
The periodic desk is organized into companies' vertical columns, intervals horizontal rows, and families organizations of factors that might be similar. factors in the identical institution have the same range of valence electrons. Dmitri Mendeleev created the periodic desk by using arranging his factors in order of growing atomic mass. He determined that when they have been organized in this manner they form a repeating sample that is periodically repeated every seven factors.
The chemical factors are organized so as of increasing atomic range. The horizontal rows are called intervals and the vertical columns are called agencies. factors within the equal institution have comparable chemical houses. this is due to the fact they have an identical range of outer electrons and identical valency. The vertical columns on the periodic desk are referred to as corporations or families due to their comparable chemical behavior. all of the participants of a family of elements have an equal number of valence electrons and similar chemical homes.
Learn more about The Periodic table here:-https://brainly.com/question/569321
#SPJ9
8. Does hydrogen have more electrons than lithium?
Answer:
Lithium has more electrons than Hydrogen
Explanation:
Lithium has 2,1 electrons
Hydrogen has 1 electrons
Is hydrogen explosive? if so what makes it explosive?
please explaen
25 points
Hydrogen is explosive, because when it is exposed to air, it reacts with oxygen, releasing heat and forms either water or hydrogen peroxide.
What is hydrogen?Hydrogen is the chemical element with the symbol H and atomic number of one (1).
Is hydrogen explosive?Yes hydrogen is explosive. When hydrogen mixes with oxygen in the air, it forms an explosive mixture.
When molecular hydrogen and oxygen are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form either water or hydrogen peroxide.
The reaction equation is given as;
H₂ + O₂ → H₂O₂ + heat
This reaction is exothermic because it releases large amount of heat to the surrounding.
Thus, hydrogen is explosive, because when it is exposed to air, it reacts with oxygen, releasing heat and forms either water or hydrogen peroxide.
Learn more about explosion of hydrogen here: https://brainly.com/question/1561031
#SPJ1
Is hydrogen explosive? if so what makes it explosive?
please explaen.
50 points
Answer:
Hydrogen(H) is in fact explosive. So H and Oxygen have a strong bond which means when they have some sort of contact it will cause a reaction. H consists of one proton and one electron which means that this simple structure can cause a chemical reaction that could cause something to be flammable and easy to ignite, it happens when H comes in contact with the oxygen in the air it can cause some sort of explosion or something relatively similar. I hope this makes sense.
Explanation:
Hope this helps:).........if not then sorry for wasting your time and may God bless you<3
What occurs when the air cools and begins to sink
Once hot air cools, it sinks to the earth's surface, here it is warmed by the ocean before rising back. This is known as a convection current.
Why convection current occurs?Differential heating usually creates convection currents. Warmer (less dense) material rises, and cooler (more dense) material sinks.
The above movement is responsible for the formation of circulation patterns known as convection currents in the Earth's atmosphere, water, and mantle.
Convection currents in the Earth's mantle are thought to be the driving force behind tectonic plate movement.
Thus, convection current occurs when the air cools and begins to sink.
For more details regarding convection current, visit:
https://brainly.com/question/9739063
#SPJ1
How much Tween 20 is needed to prepare 350 mL of a 25% Tween 20 (v/v) solution?
a. 0.875 ml
b. 875 ml
c. 8.75 ml
d. 87.5 ml
87.5 ml of Tween 20 is needed to prepare a 350 mL of a 25% Tween 20 (also called polysorbate 20) (v/v) solution in water via chemical lab methods.
What is Tween 20?By ethoxylating of Sorbian monolaurate in labs or in factories, a compound is formed that is a is a nonionic surfactant of the polysorbate type and is named as Polysorbate 20 or as we commonly call it as Tween 20.
Its other common commercial brand names can be stated as Kolliphor PS 20, Scattics, Alkest TW 20, Tween 20, and Kotilen-20 etc.
Uses of Tween 20It can be employed as a detergent and emulsifier in a variety of home, academic, and pharmaceutical applications due to its stability and relative nontoxicity.
This Tween 20 is also used as a wetting agent in a wide range of flavored mouth drops and thus provides a spreading effect to the other ingredients present in it.
To prepare 350ml 25% Tween 20 v/v solution
25% is the volume of Tween 20 in the entire solution
Thus volume = 25% of 350
= 350 x (25/100)
= 87.5 ml
To know more about Tween 20, visit:
https://brainly.com/question/14454020
#SPJ1
An atom with 15 protons and 16 neutrons is an atom of
A sulfur, S
B) phosphorus, P
C) gallium, Ga
(D) scandium, Sc
Question 3
What is the maximum number of electrons in the
An atom with 15 protons and 16 neutrons is an atom of phosphorus, P. A neutral phosphorus atom has 15 electrons which is equal to number of proton.
Phosphorus :A mineral called phosphorus is found in many foods naturally and can also be taken as a supplement. It has numbers of function in the body. It is a crucial component of cell membranes, bones, and teeth. It maintains a normal range of blood pH and aids in the activation of enzymes.
What does phosphorus do for the human body?All tissues and cells require phosphorus for their growth, upkeep, and repair, as well as for the synthesis of DNA and RNA, the genetic building blocks. Additionally, other vitamins and minerals like vitamin D, iodine, magnesium, and zinc need phosphorus to be balanced and used.
To know more about electrons :
https://brainly.com/question/1255220
#SPJ9
Perform the calculation and record the answer with the correct number of significant figures. Perform the calculation and record the answer with the correct number of significant figures.
(6.5−6.35)/3.49=
The value of the following expression is 0.0429 rounded off to 0.043. The correct number of significant figures is 2.
The given expression (6.5 - 6.35) / 3.49 is calculated as below
(6.5 - 6.35) / 3.49
0.15 / 3.49
0.04297
0.043
Zeros to the left of the first non-zero digit are considered as not significant. For example 0.00765 has only 3 significant numbers.
When multiplying and dividing measured quantities, the output of the calculation should have the same number of significant figures as the measured quantity with the fewest significant figures. When performing multiple stage calculations, do not round intermediate stage calculation results; keep as many digits as is practical and round off only in the final output
To learn more about significant figures refer here
https://brainly.com/question/11151926
#SPJ9
Which property is least helpful in identifying a sample of matter
A.Reactivity
B. Boiling point
C. Melting point
D. Volume
The property which is least helpful in identifying a sample of matter is option D. Volume.
Property including melting factor, boiling factor, density, solubility, color, odor, and so on. is bodily houses. residences that describe how a substance modifications identity to produce a new substance are chemical houses.
The reactivity of a substance is a chemical property as opposed to physical assets. The purpose qualifies as a chemical property as it is predicated on its electron configuration to decide how it's going to behave around different substances.
A matter is an attribute of depending this is unbiased its chemical composition. Density, color, hardness, melting and boiling points and electric conductivity are all examples of physical properties.
Learn more about the matter here:-https://brainly.com/question/3998772
#SPJ1
Answer: D Volume
Explanation:
Sofia is a medical examiner who is performing an autopsy on a murder victim. What will this process MOST likely involve?
A.
She will look for trace evidence present on the body.
B.
She will donate the victim’s organs.
C.
She will prepare the victim’s body for burial.
D.
She will cremate the body.
How many square centimeters are in an area of 3.90 inch² ?
Express your answer numerically in square centimeters.
Answer:
3.90 Square Inch = 25.16124 Square Centimeter
Explanation:
How to convert Square Inch to Square Centimeter ? 1 square inch (in²) is equal to 6.4516 square centimeter (cm²).
* Please Help!!!!!
A sample of carbon monoxide occupies 7.48 L at 298.0 K and 726 torr. Find its volume at −23°C and 444 torr.
The new volume occupied by the carbon monoxide at the given pressure and temperature is approximately 10.27 Liters.
What volume does the carbon monoxide occupies?Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.
It is expressed as;
P₁V₁/T₁ = P₂V₂/T₂
Given the data in the question;
Initial volume V₁ = 7.48LInitial pressure P₁ = 726 torr = ( 726/760 )atmInitial temperature T₁ = 298.0 KFinal pressure P₂ = 444 torr = ( 444/760 )atmFinal temperature T₂ = −23°C = ( −23 + 273.15 )K = 250.15KFinal volume V₂ = ?Plug the given values into the above formula and solve for the final volume.
P₁V₁/T₁ = P₂V₂/T₂
P₁V₁T₂ = P₂V₂T₁
V₂ = P₁V₁T₂ / P₂T₁
V₂ = ( (726/760) × 7.48 × 250.15 ) / ( (444/760) × 298.0 )
V₂ = 1787.4139 / 174.0947
V₂ = 10.27 L
The new volume occupied by the carbon monoxide at the given pressure and temperature is approximately 10.27 Liters.
Learn more about the combined gas law here: brainly.com/question/25944795
#SPJ1
If 70 moles of CH4 reacted with excess O2, how many grams of H2O are formed? CH4 (g) + 2 O2 (g) -------> CO2 (g) + 2 H2O (g)
The mass (in grams) of H₂O produced from the reaction is 2520 grams
How to determine the mass of H₂O producedWe'll begin by writing the balance equation for the reaction. This is given below:
CH₄(g) + 2O₂(g) -------> CO₂(g) + 2H₂O(g)
From the balanced equation above,
1 mole of CH₄ reacted to produce 2 moles of H₂O
Therefore,
70 moles of CH₄ will react to produce = 70 × 2 = 140 moles of H₂O
Finally, we shall determine the mass of water, H₂O produced from the reaction as follow:
Mole of water, H₂O = 140 molesMolar mass of water, H₂O = 18 g/molMass of water, H₂O =?Mole = mass / molar mass
Cross multiply
Mass = mole × molar mass
Mass of water, H₂O = 140 × 18
Mass of water, H₂O = 2520 grams
Thus, 2520 grams of water, H₂O were obtained from the reaction
Learn more about stoichiometry:
https://brainly.com/question/21245864
#SPJ1
A scientist is observing a rare monkey in the jungle, and the monkey begins exhibiting an odd behavior. The scientist thinks this behavior may not have been observed in this species before, but he is not certain. The scientist records video of the behavior and takes many detailed notes.
The scientist becomes very excited about his finding and plans to share it with other scientists. The best way for him to communicate and defend his finding would be to
A.
immediately write a report claiming a newly discovered behavior, and then check later to see if others have observed it before.
B.
confirm that the behavior has not been observed before, and then present his finding in a report.
C.
defend his finding as a new discovery, even if another scientist has already published a report about the behavior.
D.
wait until other scientists ask him about his trip to the jungle, and then tell them about his finding.
While at a crime scene, the forensic scientist sees a tiny hair on the floor next to the murder weapon. What should they do with this evidence?
A.
Collect the hair, and place it in a bag.
B.
Leave it there because it is so small.
C.
Dust it to the side so it’s out of the way.
D.
Take a photo of it, and then throw it away.
The forensic scientist should collect the hair and place it in a bag as an evidence.
How does a hair help in crime study?
Hair analysis is used as a tool widely for locating suspects in crime investigations.The hair possesses different characteristics which can be studied under a microscope which help in revealing a person's race, gender and color.
Considering if a person is poisoned, hair analysis can help in identifying the presence of poison in a the body.Although carrying out a blood test after a certain period of time to detect presence of poison will give a negative result but hair analysis would not,it would definitely reveal the body being poisoned.
Hair samples collected along with hair follicles remaining intact are useful for DNA testing.This is because every cell has a nucleus and is made up of chromosomes.The hair follicles contain DNA which provides useful information.
Learn more about forensic science, here:
https://brainly.com/question/15218288
#SPJ1
100 Points! Question in photo
The limiting reactant of the reaction will be aluminum (Al).
What are limiting reactants?In chemical reactions, limiting reactants are reactants that are available in limited quantity. Thus, these reactant determines how much of the products are formed. Other reactants in the same reaction are said to be in excess.
From the equation of the reaction:
[tex]2Al + 2KOH + 6HOH --- > 2 KAl (OH)_4 + 3H_2[/tex]
The mole ratio of Al to KOH to HOH is 2:2:6 or 1:1:3.
Mole of 3.0 g Al = 3/27
= 0.111 moles
Mole of 15 mL, 8 M KOH = 8 x 15/1000
= 0.12 moles
Mole of 75 mL of distilled water = 75/18
= 4.167 moles
From the above number of moles of each reactant and the mole ratio, it is obvious that Al with 0.111 moles is the limiting reactant.
More on limiting reactants can be found here: https://brainly.com/question/14225536
#SPJ1
Answer:
4.0 grams?
Explanation:
I DONT KNOW IF I AM RIGHT but if i am i wish u luck <3
hope i helped
How many quarts are equal to 5 pounds of Ethanol? The density of Ethanol is 0.789 g/mL
The volume of the ethanol in quarts is determined as 3.04 quarts.
Mass of the ethanolThe mass of the ethanol is calculated as follows;
volume of the ethanol = mass of the ethanol / density of the ethanol
mass of the ethanol in grams;5 pounds = 2267.96 g
volume of the ethanol in milliliter (mL);volume of the ethanol = (2267.96 g) / (0.789 g/mL)
volume of the ethanol = 2,874.47 mL
volume of the ethanol in quarts1 mL = 0.00105669 quart
2,874.47 mL = ?
= 2,874.47 mL x 0.00105669 quart/mL
= 3.04 quarts
Thus, the volume of the ethanol in quarts is determined as 3.04 quarts.
Learn more about volume here: https://brainly.com/question/463363
#SPJ1
What is the density of sulfuric acid if the mass of the acid is 6.514 x 10¹ g and the volume
is 3.54x 10¹ mL?
The density of the sulfuric acid is 1.840 g/ml.
Given,
Mass of sulfuric acid = 6.514 × 10 g
Volume of sulfuric acid = 3.54 × 10 ml
We have to find the density of the sulfuric acid.
The density of any substance is defined as the mass per unit volume of the substance. Or, it is the ratio of mass to volume. The units of density are kg/m³, g/ml, or g/cm³.
It is given by the formula:
Density = Mass/ volume
Density = 6.514 × 10 g/ 3.54 × 10 ml
Density = 1.840 g/ml
Hence, the density of sulfuric acid is 1.840 g/ml
To learn more about density, visit: https://brainly.com/question/13213240
#SPJ9
You have a solution of 0.250 MNaCl. If you boil away 2/3 of the volume of water, what is the concentration of this solution
The concentration of this solution is 1.506 mole
The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution.
Here given data is a solution of 0.250 M NaCl. If you boil away 2/3 of the volume of water
We have to calculate concentration of this solution = ?
2/3 of the volume of water is 2/3×0.250 = 0.1666
Concentration = mass of solute dissolved/volume
Concentration = 0.250 M/0.1666
Concentration = 1.506mole
Know more about concentration
https://brainly.com/question/28726579
#SPJ1
If the concentration of red dye #40 in the original syrup is 4.68 x 10^-3 M, what is the concentration in dilution #3 written in scientific notation
The final concentration of the solution is 2.75 * 10^-3 M.
What is dilution?We know that the stock solution is the solution from which we are able to prepare other solutions. The concertation of the stock solution is always seen to be higher than the concentrations of the other solutions that are obtained from it.
Given the dilution formula;
C1V1 = C2V2
C1 = initial concentration
C2 - final concentration
V1 - initial volume
V2 - final volume
Thus we have;
4.68 x 10^-3 M * 250 mL = C2 * 425 mL
C2 = 4.68 x 10^-3 M * 250 mL/425 mL
C2 = 2.75 * 10^-3 M
Learn more about dilution formula;https://brainly.com/question/18727938
#SPJ1
Missing parts;
A cough syrup contains red dye #40, with a concentration of 4.68 x 10-3 M.a.If you dilute the cough syrup by adding 175 mL of water to a 250. mL sample of the cough syrup, what will be the final concentration?
There are numerous starting points that a composer could use when writing a piece of music.
A. True
B. False, dynamics and tempo are the only starting points
C. False, composers never us a starting point
D. False, structure is the only starting point
It's true that there may be numerous starting points that a composer could use when writing a piece of music.
The composer may moreover start at a one-of-a-kind figure depending on the thoughts they've at that minute in time. In other expressions, it may be said that a vocalist or a guitarist is alluded to as a performer for that tally number. A composer is that as it may be an individual who sets a track to a song. Musical composition can talk about a unique piece or work of the track, both vocal or instrumental, the structure of a melodic piece, or the strategy of making or composing an unused piece of music. individuals who make modern compositions are alluded to as composers.
to know more about music composers refer to the link https://brainly.com/question/7120837?referrer=searchResults.
#SPJ9
A student isolates 1.685 grams of iron (II) oxalate, FeC2O4. What is this amount in moles?
The amount in moles of iron (II) oxalate that has a mass of 1.685 grams is 0.01170mol.
How to convert mass to moles?The number of moles in a substance can be calculated by dividing the mass of the substance by the molar mass.
According to this question, a student isolates 1.685 grams of iron (II) oxalate (FeC₂O₄).
Molar mass of FeC₂O₄ = 56 + 12(2) + 16(4) = 144g/mol
no of moles = 1.685g ÷ 144g/mol = 0.01170mol
Therefore, the amount in moles of iron (II) oxalate that has a mass of 1.685 grams is 0.01170mol.
Learn more about number of moles at: https://brainly.com/question/12513822
#SPJ1