Answer both questions with explanation and answer will give brain list

10.  39.7 g

11. 650 g of

Explanation:

To calculate the moles, we use the equation:

a) moles of

According to stoichiometry :

2 moles of produce = 1 mole of

Thus 2.5 moles of   produce=  of

Mass of

Thus 39.7 g of will be produced from 5.0 g of hydrogen.

11.

According to stoichiometry :

1 mole of is produced by = 2 moles of

Thus 1.50 moles of   are produced by =  of

Mass of

Thus 650 g of woukd be decomposed to produce 1.5 mol of oxygen

2b2t

explanation:

2b2t