how many moles of he atoms are there in 0.02g of he?
Please find the caps key and use it. I don't know what he is. Perhaps you meant He.
mols = grams/molar mass
Maybe someone might just like to answer the question instead of being petty?
0.005 mol
can someone please explain
DrBob222 just answer his question
To find the number of moles of He atoms in 0.02 g of He, you need to use the formula:
moles = mass / molar mass
1. First, find the molar mass of He. The molar mass of Helium (He) is approximately 4.0026 g/mol.
2. Use the formula to calculate the moles:
moles = 0.02 g / 4.0026 g/mol
3. Solve the equation:
moles = 0.0049975 mol
Therefore, there are approximately 0.005 moles of He atoms in 0.02 g of He.