Question

calculate the mass of 2.5 gram atoms of oxygen.

Answer 1

Answer: 40 g

Explanation: gram atom is nothing but gram atomic weight

Answer 2

The mass of 2.5 gram atoms of oxygen is 40g.

Given:

Weight of oxygen = 2.5 g

To find:

Mass of 2.5 g of oxygen = ?

Calculation:

We know that,

1 g atoms of oxygen = 16 g

∴ 2.5 g atoms of oxygen = X

On cross multiplication of above given two equation, it gives

X × 1 = 16 × 2.5

X = $\frac{16\times2.5}{1}$

X = $16\times 2.5$

X = 40

Conclusion:

The mass of 2.5 g atoms of oxygen is calculated as 40g.

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