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  • A compound possess 8% sulphur by mass. The least molecular mass is : (Response should be in integer only like 100 or 1000).Option: 1 200</p

A compound possess 8% sulphur by mass. The least molecular mass is :

(Response should be in integer only like 100 or 1000).

Option: 1

200


Option: 2

400


Option: 3

155


Option: 4

355


Answers (1)

best_answer

 

Atomic Mass Unit -

amu is used to measure mass of individual atoms.

- wherein

mass of one atom of Helium= 4 amu

Today, ‘amu’ has been replaced by ‘u’ which is known as unified mass.

 

The compound has sulphur=8%

Thus, 8g of S is present in 100g

Thus, 32g of S is present in (100/8) x 32 = 400g

Note: Least molecular mass means that at least one atom of sulphur should be present in molecule.

Posted by

manish

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