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Choose the Correct Answer from the Options Given Below : the Ratio Between the Number of Molecules in 2g of Hydrogen and 32g of Oxygen is : - Chemistry

Choose the correct answer from the options given below :

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is :

(A) 1 : 2

(B) 1:0.01

(C) 1:1

(D) 0.01:1 [Given that H = 1, O = 16]

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Solution

1:1

1 mole of hydrogen ≡ 1 g of hydrogen

1 mole of hydrogen ≡ 6.023 × 1023 molecules

1 g of hydrogen ≡ 6.023 × 1023 molecules

2 g of hydrogen ≡ 1.204 × 1024 molecules

1 mole of oxygen ≡ 16 g of oxygen

1 mole of oxygen ≡ 6.023 × 1023 molecules

16 g of oxygen ≡ 6.023 × 1023 molecules

32 g of oxygen ≡1.204 × 1024 molecules

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