Calculate each of the following quantities in 1.50 moles H3PO4:

Question

moles of H

moles of O

atoms of P

atoms of O

Answer 1

Using dimensional analysis, we have...

1.50 moles H3PO4 x 3 moles H/mol H3PO4 = 4.50 moles H

1.50 moles H3PO4 x 4 moles O/mol H3PO4 = 6.00 moles O

1.50 moles H3PO4 x 1 mol P/mol H3PO4 = 1.50 moles P

6.00 moles O x 6.02x10²³ atoms/mole = 3.61x10²⁴ atoms of O