Question

Solid phosphorus (P4) burns in excess oxygen gas to produce phosphorus oxide(P4O10)

1. if 63.01 g of phosphorus is used what mass of p4O10 is produced?

Answer 1

Answer: 141,95 g

Explanatin:M phosphorus = 124,9 g/mol

n= 63,01/ 124,9=0,5 (mol)

P4 + 5O2 --> P4O10

1 : 5 : 1

0,5 -> 2,5 -> 0,5 (mol)

M P4O10 = 283,9 g/mol

m P4O10 = n.M = 0,5 . 283,9= 141,95 ( g)

i hope that this will help (cause i not really good at english but i quite good at chemical :}} )