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?
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 law
of definite proportions?​

Answer 1

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Answer 2

Answer:

1. 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? Thus, 24 g of oxygen gas would be required to react completely with 3 g of hydrogen gas.
2. Atoms are neither created nor destroyed in a chemical reaction is one of the postulates of Dalton's theory. Mass can neither be created nor destroyed. This law is called the Law of conservation of mass. This postulate of Dalton's atomic theory is the result of the law of conservation of mass.
3. Thus, the postulate which explains the law of definite proportion is “The relative number and kind of atoms in a given compound remain constant”.