Question

3. State the postulate of Dalton's atomic theory which led to the law of conservation of mass. Calculate the molecular mass of water​

Answer 1

Answer:

• Atoms can neither be created nor destroyed in a chemical reaction.
• Molecular mass of water:

H2O = 2x1 +16

= 18 g

Answer 2

Answer:

Postulate 2 : atoms are indivisible particles which cannot be created or destroyed in a chemical reaction.

Explanation:

now, molecular mass of water is 18u.

H2O

atomic mass of H Is 1.

atomic mass of O is 16.

so, in h2o

it is 1+1+16