Question

2. Hydrogen and augen
the ratio of 158 by mass to fom
water. What mass of ugen gas
would be required to react
completely with 3 g of hydrogen
gas?
3. Which postulate of Dalton's
atomic theory is the result of the
law of conservation of mass?
4. Which postulate of Dalton's
atomic theory can explain the lan
of definite proportions?​

Answer 1

Answer:

Question 2:

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

ANSWER:

It is given that the ratio of hydrogen and oxygen by mass to form water is 1:8.

Then, the mass of oxygen gas required to react completely with 1 g of hydrogen gas is 8 g.

Therefore, the mass of oxygen gas required to react completely with 3 g of hydrogen gas is 8 × 3 g = 24 g.

Question 3:

Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass?

ANSWER:

The postulate of Dalton’s atomic theory which is a result of the law of conservation of mass is:

Atoms are indivisible particles, which can neither be created nor destroyed in a chemical reaction.

Question 4:

Which postulate of Dalton’s atomic theory can explain the law of definite proportions?

ANSWER:

The postulate of Dalton’s atomic theory which can explain the law of definite proportion is:

The relative number and kind of atoms in a given compound remains constant.