Question

6 gram of hydrogen is a burnt in the presence of excess oxygen . the mass of a water formed is:​

Answer 1

Answer: 108g

Explanation:

H2 + O2 → 2H2O

Required- (2*1g) (2*16g) (2*18g)

2g 32g 36g

2g of H2 burns in oxygen to produce 36g of H2O

1g of H2 burns in oxygen to produce 36/2 g of H2O

6g of H2 burns in oxygen to produce 6*36/2 g of H2O

= 6*18 g of H2O

= 108g of H2O

Answer 2

Answer:

2H2+O2-->2H2O

From equation 2mole H2=2moles of H2O

3mole H2=3moles H2O

Mass of H2O = mass × molecular mass

=3×18

=54g