Question

if the experiment shows a gas is involved four group of students record their lives observation on the gas produced as shown in tue following table choose the correct set of conservation​

Answer 1

Answer:

22.4 L of a gas at STP= 1 mole.

11.2 L of a gas at STP= 0.5 mole.

11.2 L of a gas at STP will weigh 14 g.

0.5 moles of a gas at STP will weigh 14 g.

1 mole of a gas at STP will weigh

0.5

1

×14=28 g.

The molecular weight of the gas is 28 g/mol.

Molecular weight of N

2

O=2(14)+16=44 g/mol.

Molecular weight of NO

2

=14+2(16)=46 g/mol.

Molecular weight of N

2

=2(14)=28 g/mol.

Molecular weight of CO=12+16=28 g/mol.

Hence, 11.2 L of N

2

and CO at STP will weigh 14 g.