Convert 3.974×10^10 grams to mg
Answer:
3.974 x 10¹³ mg
Explanation:
To find the amount in milligrams (mg), you need to multiply the given number by the conversion, 1,000 mg/g. This conversions exists as a ratio which compares the amount of mg per every 1 g. It is important to arrange the ratio in a way that allows for the cancellation of units (grams should be in the denominator).
1,000 mg = 1 g
3.974 x 10¹⁰ g 1,000 mg
----------------------- x ------------------- = 3.974 x 10¹³ mg
1 g
If the barometric pressure (Patm) is 766 Torr and h = 141 mmHg, then what is the pressure of the gas in the bulb? Please express your answer in units of atmospheres. The pressure is. atm.
The Pressure of gas in the bulb = 1392.70 atm
1) The barometric pressure is also called atmospheric pressure as it is the pressure with in the earth.
The SI unit of this pressure is = pascals.2) The given values are
The barometric pressure = 766 Torr = 1.00789 atm (convert the value of torr into the standard pressure that is atm)
The height of Barometer (in mercury)= 141 mmHg
Pressure of a gas in bulb = need to find out.
The formulae used is
P=ρ×g×h, where:
P = pressure of gas (unknown )
g = acceleration due to gravity = 9.8m/s²
h = Hight of the liquid
By substituting all the values in above equation,
P = 1.00789×9.8× 141
P = 1392.70 atm
so the The barometer whose barometric pressure is 1392.70 atm atm exerted by the mercury and the height of the liquid is 141 mmHg.
Learn more about Barometric pressure here
https://brainly.com/question/3083348
#SPJ9
When graphic scores first evolved, what were they often used in combination with?
A. Traditional music notation
B. Numerical systems
C. Bar charts
Answer: its A
Explanation: Graphic notation (or graphic score) is the representation of music through the use of visual symbols outside the realm of traditional music notation. Graphic notation became popular in the 1950s and can be used either in combination with or instead of traditional music notation.
Which planet is believed to have a changing atmosphere
Answer: Uranus and neptune
Explanation:
How does a lithium cation compare to a lithium atom?
The cation is larger.
The cation has the same radius.
The cation is smaller.
The cation has the same charge.
The lithium cation is smaller than lithium atom .
The lithium atom's electronic configuration is as follows:
Li = 1s², 2s
While the following describes the electronic structure of the lithium cation,
Li⁺ = 1s
Some of the reasons why lithium cation is shorter than the corresponding parent atom .
Reduced Energy LevelsThe Li atom's valence shell is shown in electronic configurations as being two whereas the Li cation's is one; as a result, the distance between the valence electrons and nucleus has shrunk, resulting in small size.
Less Shielding EffectShielding effect refers to the way the core electrons protect the valence electron from nucleus pull. Since there are no core electrons in a cation of lithium, the electrons are more drawn to the proton, which causes the cation to be tiny.
More nuclear chargeThree protons and three electrons make up the Li atom; as a result, three protons will pull three electrons, making the game somewhat balanced. However, once one electron leaves the Li cation, the proton side becomes stronger and exerts more force on the remaining electrons, bringing them closer to the nucleus and shrinking their size.
In this way, a lithium cation became shorter than its corresponding parent atom.
To learn more about lithium ion size please refer:
https://brainly.com/question/14299593
#SPJ1
How would you define the period of a pendulum?
A.) time it takes the pendulum to make one full back-and-forth swing
B.) time it takes the pendulum to swing forward only
C.) time it take the pendulum to swing back only
The period of the pendulum is defined as time it takes the pendulum to make one full back-and-forth swing
What is a pendulum?The pendulum is a device that could be used to demonstrate oscillatory motion. We know that the pendulum has a long string that is fastened to a support. The bulb is displaced at a small angle and the period is the time that is taken to complete the cycle.
The kind of motion that is undergone by a pendulum is what we define as the oscillatory motion. It is a regular repeating motion and the acceleration is directed always towards the center of the motion.
We can tell that the pendulum swings from one side to the other and we could use the stop clock to measure the movement of the pendulum. Thus it follows that the period of the pendulum is defined as time it takes the pendulum to make one full back-and-forth swing.
Learn more about pendulum:https://brainly.com/question/14759840
#SPJ1
Which characteristic property of the substances in the solutions does thin-
layer chromatography utilize?
O molecular polarity
O conductivity
Odensity
particle size
The characteristic property of the substances in the solutions does thin-layer chromatography utilize is molecular polarity. The correct option is A.
What is thin layer chromatography?Thin layer chromatography s used to separate the molecules on the basis of their polarity. It is done on a thin sheet of aluminum foil or glass or plastic in which the molecules are poured, and then it is covered by a sheet of material.
When solvents travel through the sheet, the molecules travel at different speeds or paces.
Thus, the correct option is A, molecular polarity.
To learn more about thin layer chromatography, refer to the link:
https://brainly.com/question/13483325
#SPJ1
1. An alloy of gold and silver has a density of 13.1 g/cm³. Calculate the volume of a 4.80 g sample of the alloy.
The volume of the alloy of gold and silver having density of 13.1 g/cm³ and mass 4.80 g is 0.367 cm³.
We have an alloy of gold and silver.
We have to calculate the volume of a 4.80 g sample of the alloy.
Which term is used to define the ratio of Mass to density?The ratio of mass to density is equal to volume of a substance. Mathematically -
M/ρ = V
ρ - density of substance.
M - mass of substance
V - volume of substance
According to the question -
The ratio of mass to density is -
V = M / ρ
Substitute the values -
V = 4.80 / 13.1 = 0.367 cm³.
Hence, the volume of the alloy of gold and silver is 0.367 cm³.
To solve more questions on Mass - Density relation, visit the link below-
https://brainly.com/question/28348989
#SPJ1
She chops and shapes some of the larger pieces of wood into uniform shapes to build her shelter. What kind of change is taking place as the wood is chopped?
Answer:
a change in physical property
What is specific heat capacity?
A. The energy absorbed or given off in a chemical reaction
B. The energy stored within the chemical bonds of a substance
C. The energy needed to change the temperature of a substance
D. The energy required to completely melt 1 g of a substance
Answer:
c
Explanation:
it is the amount if energy required to move the temoreture of a substance by one 1 Celsius degree
The energy needed to change the temperature of a substance. Option C is correct.
Specific heat capacity is a physical property of a substance that represents the amount of energy required to change the temperature of a unit mass (usually 1 gram) of the substance by one degree Celsius or one Kelvin. It is expressed in units of joules per gram per degree Celsius (J/g°C) or joules per gram per Kelvin (J/g K).
Specific heat capacity is essential in understanding how different substances respond to changes in temperature. Substances with higher specific heat capacities require more energy to increase their temperature, and conversely, they release more energy when their temperature decreases. This property also determines how well a substance can store or release thermal energy.
The formula to calculate the heat absorbed or released by a substance during a temperature change is Q = mcΔT, where Q is the heat energy absorbed or released, m is the mass of the substance in grams, c is the specific heat capacity of the substance in J/g°C or J/g K, and ΔT is the change in temperature in degrees Celsius or Kelvin.
For example, water has a relatively high specific heat capacity (4.18 J/g°C), meaning it can absorb or release a significant amount of energy without experiencing a significant temperature change. This property is why water helps to regulate temperature in natural environments, and it makes water an excellent coolant and heat reservoir in various industrial and biological processes.
In summary, specific heat capacity is a crucial factor in understanding how substances respond to changes in temperature and how they store and release thermal energy. It plays a significant role in various fields, including chemistry, physics, and engineering.
To learn more about specific heat capacity, here
https://brainly.com/question/28302909
#SPJ2
Why is a simple stain not used when analyzing a sample obtained from a nonsterile part of the body like the throat? WILL GIVE A LOT OF POINTS!!!!
Answer:
Simple staining provides the contrast between the bacteria and the surroundings.
Explanation:
Over staining the bacterial smear may cause the cell wall disruption or totally destroy the cell wall which results in the loss of true morphological characteristics of the bacterial cell
Question 1.4) Two bottles of the same gas are connected. One bottle has 15 particles at first and one has 2 particles. What will happen over time? Why?
We know that in gas the particles are loosely packed, that is it can move freely compared to solid and liquid. Two bottles of the same gas are connected. One bottle has 15 particles at first and one has 2 particles. Diffusion will occur. The particles will move until the volume in both the bottles will be equalized.
For gas there are three laws which are applied. Boyles law, Charles law and Avogadro's law.
Boyles law here it is the relationship between the pressure and the volume. when the volume of the gas at constant temperature varies with pressure applied on it inversely. Formula
P₁V₁=P₂V₂
Charles law is explained in the terms of temperature and volume. it states that the volume of the gas in a fixed amount is directly proportional to its temperature if and only the pressure remains constant. formula
V₁/T₁=V₂/T₂
Avogadro's law is related with the amount and the volume. it says that under the same condition the pressure and the temperature, the equal volume of different gases contains equal number of molecules.
V₁/n₁=V₂/n₂
Diffusion will occur and the particles will be same in both.
Learn more about Gas law here https://brainly.com/question/25587265
#SPJ 9
Which of the following are some properties of small hydrocarbons compared with larger hydrocarbons?
A) Higher boiling point, lower volatility, lower viscosity, lower flammability
B) Lower boiling point, higher volatility, lower viscosity, higher flammability
C) Lower boiling point, lower volatility, lower viscosity, lower flammability
D) Higher boiling point, higher volatility, higher viscosity, higher flammability
QUESTION 1
Sugar is blank meaning it can readily absorb moisture.
Answer:
sugar is hygroscopic
Explanation:
sugar is hygroscopic
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients
C(s) + H₂(g) → C₂H. (g)
6
A block has a mass of 4.495 and a volume of 147.4 calculate the density
Answer:0.0303495251
Explanation:
I know the answer looks weird.
If the answer is wrong then the formula for density is mass divided by volume.
Why does the middle element in a specific group of similar elements act as an intermediate between the other two? A:A. The middle element is more likely to react with other elements. B:B. The middle element has more atoms than the other two elements. C:C. The middle element is close to the average of the other two elements. D:D. The middle element is more common in nature than the other two elements.
The middle element in a specific group of similar elements act as an intermediate between the other two because it is close to the average of the other two elements and is denoted as option C.
What is an Element?These are the substances which aren't unable to be broken down by a chemical reaction and comprises of subatomic particles such as electron, proton etc.
The middle element in a specific group of similar elements act as an intermediate between the other two because it is close to the average of the other two elements when arranging the elements in order of their atomic masses.
Read more about Element here https://brainly.com/question/18096867
#SPJ1
A sample of baby oil has a volume of12 mL and a mass of 10 g. What is the density of the baby oil?
The density of the baby oil, ρ = 0.833 g/ml.
Equation :density = mass / volume
ρ = m / V
where,
ρ is density
m is mass
V is volume
So putting the values in the formula,
ρ = 10g / 12ml
ρ = 0.833 g/ml
What is density, mass and volume?The three most fundamental characteristics of an object are mass, volume, and density. Volume indicates something's size, mass indicates how heavy it is, and density is calculated as mass divided by volume. Although you deal with mass and volume on a daily basis, the concept of density is less clear-cut and requires careful consideration.
To know more about mass :
https://brainly.com/question/19694949
#SPJ9
1. Strawberries cost $4.64 per pound. How much would 15.70 gallons of strawberries cost?
Answer: $582.47
Explanation:
Convert $4.64 per lb to $ per gallon. That would equal around $37.10. Multiply that by 15.70 gallons of strawberries and you'll get $587.47.
15.70 gallons of strawberries would cost approximately $365.40.
To determine the cost of 15.70 gallons of strawberries, we need to convert the volume from gallons to pounds and then multiply by the cost per pound.
First, we need to know the conversion factor between gallons and pounds for strawberries. This conversion factor depends on the density or specific gravity of strawberries, which can vary. Without this information, it is not possible to accurately convert gallons to pounds.
If we assume an average conversion factor of 1 gallon of strawberries weighing approximately 5 pounds, we can estimate the cost. However, please note that this is an approximation and the actual weight of strawberries per gallon may vary.
15.70 gallons * 5 pounds/gallon * $4.64/pound = $365.40
Therefore, based on the approximation, 15.70 gallons of strawberries would cost approximately $365.40.
Learn more about conversion factors, here:
https://brainly.com/question/23718955
#SPJ2
Why do you think the mass number
includes only the numbers of protons and neutrons?
Protons and neutrons make up the majority of an atom's mass because electrons have almost negligible mass. Consequently, an atom's mass in atomic mass units is determined by the sum of its protons and neutrons.
How do the quantity of protons and neutrons affect atomic mass?An element's mass number is determined by the sum of its proton and neutron counts: Protons and neutrons together make up mass. Simply deduct the number of protons, or atomic number, from the mass number to get how many neutrons each atom has.
This becomes significant when there is a mass number. It enables us to distinguish between elements known as isotopes that have differing numbers of neutrons.
Although protons and neutrons are similar in size, they are both significantly heavier than electrons (approximately 2,000 times as massive as an electron). A proton's positive charge is equivalent to an electron's negative charge in strength.
Learn more about protons and neutrons refer
https://brainly.com/question/28476164
#SPJ9
How many cars are in 2.5 moles of cars?
The number of tires contained by 2.5 moles of cars is 10 tires.
What is number of moles?The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance.
The number of tires contained by 2.5 moles of cars is calculated as follows;
1 moles of a car contains 4 tires
2.5 moles of cars will contain -------?
Substitute the given parameters and solve for the number of tires contained in 2.5 moles of cars.
= 2.5 moles x 4 tires/1 mole
= 10 tires
Thus, the number of tires contained by 2.5 moles of cars is 10 tires.
Learn more about number of moles here: https://brainly.com/question/14357742
#SPJ1
Explain how you might determine your density.
To determine the density of a living body, divide the body mass by the volume of the body.
What is density?"Density is the mass per unit volume". It is a scalar quantity. It is referred to by d and the symbol for density is given as rho, a Greek symbol. Density is calculated as mass divided by volume.
To calculate the density of a living body. Just calculate the mass of the body and the total volume of the body and divide these entities. Humans have a density approx to 1000 kg/m3
The formula is
d = m / v
Thus, to calculate density, the body mass is divided by the body's volume.
To learn more about density, refer to the link:
https://brainly.com/question/25059704
#SPJ1
2. True or False - If you were
measuring the distance from Fresno,
CA to Miami, FL, the most reasonable
unit of measurement would be
decimeters. Explain your answer. (2
pts)
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
The given statement is false ~
As we know, large distances can only be measured by using larger units like kilometers, miles, or other units, and it's much convenient. so, it's so different if we were to measure that distance using small unit like " decimeters "
I hope that was reasonable for you to understand, let me know if you have any questions ~
A star is estimated to have a mass of 2.0 ✕ 1036 kg. Assuming it to be a sphere of average radius 6.7 ✕ 105 km, calculate the average density of the star in units of grams per cubic centimeter.
Taking into account the definition of density, the density of the star is 1,587,553.58 g/cm³.
Definition of densityDensity is defined as the quantity that allows us to measure the amount of mass in a certain volume of a substance.
Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
density= mass÷ volume
Density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
Average density if the starIn this case, you know that:
Mass= 2×10³⁶ kg= 2×10³⁹ g (being 1 kg= 1000 g)Volume of the sphere= 4/3×π×r³ where r is the radius of the sphereVolume of the sphere= 4/3×π×(6.7×10¹⁰ cm)³= 1.2598×10³³ cm³ (being 1 km equals to 100,000 m, 6.7×10⁵ km= 6.7×10¹⁰ cm)Replacing in the definition of density:
density= 2×10³⁹ g÷ 1.2598×10³³ cm³
Solving:
density= 1,587,553.58 g/cm³
In summary, the density of the star is 1,587,553.58 g/cm³
Learn more about density:
brainly.com/question/952755
brainly.com/question/1462554
#SPJ1
How many nonbonding pairs does the molecule H₂ have?
The electron dot structure for H2O shows that the O has 2 lone pairs of electrons. So the answer would be 4 non bonding electrons are in a water molecule.
if you really liked my answer, then rate, thanks, and award brainliest
hope this helped :)
Does a reaction occur when aqueous solutions of manganese(II) iodide and sodium nitrate are combined?
If a reaction does occur, write the net ionic equation.
A chemical reaction does occur when an aqueous solutions of lead(II) nitrate and nickel(II) chloride are combined.
The correct answer choice to the above is option a.
This means that when an aqueous solutions of lead(II) nitrate and nickel II chloride are combined, it gives lead II chloride and nickel trixonitrate IV
The net ionic equation is given below:
Pb(NO3)2 + NiCl2 ----- PbCl2 + Ni(NO3)2
Pb2+ NO3- + Ni2+Cl- ----- Pb2+ Cl- + Ni2+ NO3-
What are chemical reactions?Chemical reactions are those reactions whereby substances combine together to form other substances. The substances which combine together are called the reactants while the new substance formed is known as product.
So therefore, a chemical reaction does occur when an aqueous solutions of lead(II) nitrate and nickel(II) chloride are combined.
Complete question:
Does a reaction occur when aqueous solutions of lead(II) nitrate and nickel(II) chloride are combined?
a. yes
b. no
If a reaction does occur, write the net ionic equation.
Learn more about chemical reactions:
https://brainly.com/question/11231920
#SPJ1
CERER science Q= how is kinetic energy related to temperature?
C
E
R
E
R
Need this ASAP LIKE NOW
A substance's temperature in physics' laws, is directly related to the average kinetic energy of its particles. Because the particles' mass is constant, they must travel faster as the temperature rises.
What is Kinetic Energy?In physics, the kinetic energy of an object is the energy it possesses as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a given speed.
The body retains its kinetic energy, having acquired it during acceleration, until its speed changes.
Kinetic energy is present in an accelerating ball, a walking human, and electromagnetic radiation like light. Another type of kinetic energy is the energy associated with the continuous, random bouncing of atoms or molecules.
Learn more about Kinetic Energy:
https://brainly.com/question/26520543
#SPJ1
Can the melting point of a substance be used as a criterion of purity?
Yes. The melting point of a substance can be used as a criterion of its purity.
The melting point of substancesThe melting point of a solid substance is the temperature at which the molecules of the solid melt to become liquid.
The melting point of a solid substance can be used as a criterion to judge how pure the substance is.
Pure solids have sharp or narrow melting points. On the other hand, impure solids melt over a wide range of temperatures, as high as 5 degrees Celsius.
The presence of impurity also lowers the melting point of substances. For example, pure sugar melts at 186 degrees Celsium while sugar with impurity will melt at lower temperatures but over a wide range.
More on the melting point of substances can be found here: https://brainly.com/question/20551307
#SPJ1
A mixture of CaBr2 and inert material is analyzed to determine the Ca content. First the mixture is dissolved in water. Then all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate.
CaBr2(aq) + 2AgNO3(aq) 2AgBr(s) + Ca(NO3)2(aq)
In one experiment, a 0.8206 g sample of the mixture resulted in 1.1196 g of AgBr. Determine the percent (by mass) of Ca in the mixture.
The mass percent of calcium is 14.5%.
What is the mass percent of calcium?We know that a reaction is said to occur when there is an interaction between two reactants that leads to the formation of a product. In this case, the equation of the reaction is shown in the question above.
Number of moles of silver bromide produced = 1.1196 g/188 g/mol = 0.00595 moles
If 1 mole of calcium bromide produces 2 moles of silver bromide
x produces 0.00595 moles of silver bromide
x = 0.00595 moles * 1 mole/2 moles
= 0.00298 moles
Number of moles calcium ions in sample = 0.00298 moles
Mass of calcium in sample = 0.00298 moles * 40 g/mol = 0.1192 g
Mass percent of calcium = 0.1192 g/ 0.8206 g * 100/1
= 14.5%
Learn more about mass percent:https://brainly.com/question/5394922
#SPJ1
Illustrate the structural and functional difference between glucose and fructose?
Question: ) ✨ Illustrate the structural and functional difference between glucose and fructose?
Answer: We know that Glucose is six membered ring, while fructose is a five-membered ring. Both rings contain an oxygen atom.Glucose and fructose are structural isomers: have the same chemical formula but have different arrangement of atoms. While glucose has aldose sugar- carbonyl group at the end of the chain, fructose has ketose sugar- carbonyl group in an internal of the chain (specifically, at the second carbon.
Hope this helps <3
Explanation: