Answer:
C) 97.2g
Explanation:
Information given;
- Calculate Number of moles
- Mass of Helium
Before proceeding, it is important to know the relationship between number of moles, mass and molar mass.
Generally 1 mole of a atom weighs as much as its molar mass. Given that the molar mass of Helium is 4.00g/mol.
It means one mole of Helium weighs 4 g.
How grams then do 24.3 moles weigh?
1 mol = 4.00g
24.3 mol = x g
Cross multiplication yields;
x = (24.3 * 4) / 1
x = 97.2 g
