Question

How many gram molecules are present in 4.9g of H2SO4?

Answer 1

1 gram molecules are present in 98g.
therefore 1/10 molecules present in 9.8 gram.
1/20 molecules will present in 4.9gram.
1/20=0.05 gram.

Answer 2

Given:

H2SO4 is 4.9 grams

To find:

Gram molecules of H2SO4

Solution:

As we know, 1 mole of any given substance equals 1 gram molecule of that substance.

From this, we can say that,

1 mole = 1 gram molecule

For H2SO4 one mole is equal to 98 grams.

Therefore, calculating the number of moles for 4.9 grams

$n = \frac{4.9}{98} = 0.05moles$

So, for 0.05 moles the number of gram molecules is 0.05-gram molecules.

Hence, the number of gram molecules is 0.05.