Question

what is the molecular mass of substance each molecule of which contain 4 atom of carbon and 10 atom of Hydrogen

Answer 1

The molecule is C₄H₁₀ Butane
Molecular mass = (12×4)+(1×10)= 58

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Answer 2

The substance’s molecular mass where each molecule contains 10 hydrogen atom and 4 carbon atom will be 58 u.

Given:

Atoms of C = 4

Atoms of H = 10

Solution:

Hence, the molecular formula will be = $C_4H_{10}$

Molar mass of C = 12 u

Molar mass of H = 1.0 u  

Hence,

Molecular mass of $C_4H_{10}$ = (4 × 12) + (10 × 1)  

Molecular mass of $C_4H_{10}$ =  48 + 10  

Molecular mass of $C_4H_{10}$ =  58 u