Respuesta :
Answer:
For a: The number of atoms of both the gases remains the same.
For b: The number of grams of 1 mole of argon is more than 1 mole of helium.
Explanation:
- For a:
We are given 1 mole of each helium and argon gas. To calculate the number of atoms of each gas, we use mole concept.
According to mole concept:
1 mole of an element contains [tex]6.022\times 10^{23}[/tex] number of atoms.
So, 1 mole of helium gas will contain [tex]1\times 6.022\times 10^{23}=6.022\times 10^{23}[/tex] atoms.
And, 1 mole of argon gas will contain [tex]1\times 6.022\times 10^{23}=6.022\times 10^{23}[/tex] atoms.
Hence, both the gases have same number of atoms.
- For b:
To calculate the number of moles, we use the formula:
[tex]Moles=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
- For helium:
Molar mass = 4 g/mol
Number of moles = 1 mole
Putting the values in above equation, we get:
[tex]1mole=\frac{\text{Given mass}}{4g/mol}=4grams[/tex]
- For Argon:
Molar mass = 39.95 g/mol
Number of moles = 1 mole
Putting the values in above equation, we get:
[tex]1mole=\frac{\text{Given mass}}{39.95g/mol}=39.95grams[/tex]
Difference in mass of argon and helium = (39.95 - 4)g = 35.95g
Hence, mass of argon is more than mass of helium by 35.95 grams.
