What mass of phosphoric acid will be produced from the reaction of 10.00g of P4O10 with excess water?

Answer 1

P4O10 + 6H2O ==> 4H3PO4

Convert 10.00 g P4O10 to moles. # moles = grams/molar mass.

Using the coefficients in the balanced equation, convert moles P4O10 to moles H3PO4.

Convert moles H3PO4 to grams.
grams = moles x molar mass.