Question

Calculate the relative formula mass of the following :-
___________________________

● Oxygen
● Ammonia
● Sulfur Dioxide
● Octane
● Sulfuric Acid
● Potassium Bromide
● Copper Nitrate
● Aluminium Chloride
___________________________

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Answer 1

Answer:

● Oxygen:-

O2 is a diatomic molecule. The mass of an oxygen atom = 16 amu. ∴ Mass of O2 molecule = 2 × 16 = 32 amu. ⇒ 5.31 × 10-23g.

● Ammonia:-

The formula of ammonia is NH3 . ... Since there are 3 Hydrogen atoms present, the formula mass of H is 1.0 × 3 = 3.0 g/mol. Therefore, by adding them up, the formula mass of ammonia is: [14.0 g/mol + 3.0 g/mol] = 17.0 g/mol.

● Octane:-

The molar mass of octane is 114.26 g/mole.

● Sulfuric Acid:-

To do this, multiply the numbers of atoms of each element in a compound by their atomic masses from the periodic table. When you add these numbers up, you come up with the molar mass of the compound. As a result, we would say that the molar mass of sulfuric acid is "98.09 g/mol."

● Potassium Bromide:-

The molar mass of KBr is 119.00 g/mole.

● Copper Nitrate:-

CuNO3

Copper(i) nitrate | CuNO3 - PubChem.

● Aluminium Chloride:-

The molar mass of aluminum chloride is 133.33 g/mole. Decomposition in chemistry is the chemical separation of a compound. Liquid aluminum chloride will decompose if an electrical current is pushed through it. The reaction is 2AlCl3 → 2Al + 3Cl2.

Explanation:

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Answer 2

Answer:

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