Which of the statements about atoms are true?
1 answer:
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Answer:
The mole fraction of N₂ is 0.26.
Explanation:
The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
PT = PA + PB
This relationship is due to the assumption that there are no attractive forces between the gases.
Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.
So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:
PA = XA * PT
In this case:
- PA= PN₂= 300 torr
- XA=XN₂= ?
- PT= 1.50 atm= 1140 torr (being 1 atm= 760 torr)
Replacing:
300 torr= XN₂*1140 torr
Solving:
XN₂= 0.26
<u><em>The mole fraction of N₂ is 0.26.</em></u>
Answer: 1 mol of carbonate to 2 mol of acid
Explanation:
To calculate the number of moles for given molarity, we use the equation:
a)
b)
Thus the mole ratio of carbonate to acid is =
Answer:
The answer to your question is below
Explanation:
Process
1.- To draw an organic molecule, start from the end of the name (pentane)
Pentane has 5 carbons.
2.- Assign numbers the carbons, you can start from the left or to the right
3.- Attach the branches (bromine) in positions 2 and 3
