Question

Calculate masses in grams : (i) 1 atom of Ag ; (ii) 1 gm atom of nitrogen ; (iii) 1 mole of Ca ; (iv) 1 mole of O2 molecule.

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Answer 1

Answer:

1)mole=0.1

weight=mole x molar weight=0.1 x 107.87=10.787g

2) weight of H2SO4=0.1 x 98=9.8 g

3) mole =no of molecule/6.023 x 10^23

=10^23/6.023 x 10^23=1/6.023

weight of CO2= mole x molar weight

=1/6.023 x 44=7.3 g (approx)

4) weight of carbon=1g

5) mole =1/6.023

weight =mole x molar weight

=1/6.023 x 40=6.67 g (approx)

now increasing order of their masses:-

(4) < (5) < (3) < (2) <(1)

Explanation:

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