Question

The number of mole of H atom in 92g of alcohol are

Answer 1

Answer:

6

Explanation:

6 number of moles are present in it.

Answer 2

Complete Question:

How many moles of hydrogen atoms are present in 92g of alcohol (C₂H₅OH)?

Answer:

The number of moles of H atom in 92 g of ethanol is 12.

Explanation:

Given,

The mass of ethanol (C₂H₅OH) (w) = 92 g.

To find,

The number of moles of Hydrogen present in 92 grams of ethanol.

Calculation,

1 mole of ethanol (C₂H₅OH) contains 6 moles of hydrogen.

Now, we calculate the number of moles of 92 grams of ethanol.

We know that the Gram Molecular Weight of ethanol (C₂H₅OH) is:

(2 × 12) + (5 × 1) + (1 × 16) + (1 × 1) = 46 g. (As Atomic mass of carbon, hydrogen, and oxygen are 12, 1, and 16 respectively).

$\implies n = \frac{Weight}{G.M.W}$

⇒ n = 92/46

⇒ n = 2 moles.

If 1 mole of C₂H₅OH contains 6 moles of Hydrogen atom then 2 moles of C₂H₅OH contain 12 moles of the hydrogen atom.

Therefore, the number of moles of H atom in 92 g of ethanol is 12.

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