Question

Please help!

Consider the reaction of hydrogen and oxygen to form water as follows:

2 H2 (g) + O2 (g) --> 2 H2O (l)

if 10.5 g of hydrogen are placed in a reaction vessel, how many grams of oxygen are required to fully react with the hydrogen to make water? Numerical answers only; do not include units in your answer!

Answer 1

83.3g of O2 is required (rounded to 3 sig figs)

Step-by-step explanation:

10.5g H2 x 1 mol H2 x 1 mol O2 x 31.999g O2

2.016g H2 2 mol H2 1 mol O2

= 83.3