Question

9. Which of the following contains same number of molecules as in 1 mole of any substance????

a)32 g of sulphur b) 18 g of H20 c)17 g of ammonia d ) 16 g of methane


please answer this question with proper explanation ​

Answer 1

HI DEAR :)

Answer:

All the above are correct

Explanation:

THE 1MOLE of any substance is equal to. 6.022 X 10^23 molecules

Since the MOLECULAR MASS / MOLAR MASS of any compound/ element is equal to 1mole of that element .

EG :- He (molar mass )= 4

(and that will contain 6.022X 10^23 molecules = 1mole )

also, H2O (molecules mass) = 2X 1 + 16 = 18g ( and it will also contain 6.022 X 10^ 23 molecules = 1mole)

THANKS:)

Answer 2

All Of The Above

To Explain :-

The One mole of any substance = 6.022 × 10^23

Molecular Mass :-

$\huge \sf \frac{Molecular Mass }{Molar}$

$\huge\sf \frac{Compound }{Element}$

$\sf \: => 1 Mole$

Example :-

• He {Molar mass} = 4

Finally :-

• H2O = 2 × 1 ÷ 16
• = 18 g

{ And it will also contain 6.022 × 10^23 molecules = 1 mole }