How many grams are contained in 2.00 mol of neon?
Multiply the given moles times the molar mass of neon,
n - number of moles
m - mass of substance
M - molar mass
2.00 moles (n) of Ne has been provided for you.
Now you have to find the molar mass (M) of Ne. If you look into your periodic table, the molar mass of Neon is 20.2 g/mol.
flip-over the formula and it becomes
The mass of Neon is: [m = 20.2 g/mol
= 40.4 grams.
Therefore, 40.4 grams are contained in 2 moles of Neon.