Question

DPP-1
If the atomic mass of Sodium is 23, the number of moles in 46 g of sodium is:
(1) 1
(2)2
(4) 4.6
(3) 2.3
2
The weight of a molecule of the compound CH,,, is :
(1) 1.09 x 10-21g (2) 2.988 10-22 g (3)5.025 x 10-23g
(4) 16,023 10-23
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Answer 1

Answer:

We know that the formula of calculating mols in terms of weight is....

n = weight / molecular weight

So, n = 46/23 = 2 mol