Grams/Moles Calculations?

Find the number of moles.

16g of H_3PO_4H3PO4

What do i do? I found the mass of the compound, which is 97.994

What do i do next?

1 Answer
Apr 4, 2018

"0.163 mol"0.163 mol

Explanation:

"97.994 g/mol"97.994 g/mol is the molar mass of "H"_3"PO"_4H3PO4. It is mass of "1 mol"1 mol of "H"_3"PO"_4H3PO4.

"1 mol H"_3"PO"_4 = "97.994 g"1 mol H3PO4=97.994 g

1 = ("1 mol H"_3"PO"_4) / "97.994 g"1=1 mol H3PO497.994 g

Multiplying a number with color(red)(("1 mol H"_3"PO"_4) / "97.994 g")1 mol H3PO497.994 g is equivalent to multiplying it with 11.

So,

"16 g H"_3"PO"_4 = 16 cancel("g H"_3"PO"_4) xx ("1 mol H"_3"PO"_4)/(97.994 cancel("g H"_3"PO"_4)) = "0.163 mol H"_3"PO"_4