Question

# The molecular formula of a compound is C2X6. X is unknown . If the mass ratio of C to X is 4:1. Find X.

A

Helium

B

Sodium

C

Calcium

D

Hydrogen

Solution

## The correct option is D Hydrogen Let the mass of the element X be ‘y’. so the mass ratio of carbon to X = (2×12)(6×y)=41 So y = 1 This means the mass of element X=1 So X is hydrogenChemistry

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