question_answer

A colourless liquid is thought to be a pure compound. Analysis of three samples of the material yield the following results.

	Mass of Sample	Mass of Carbon	Mass of Hydrogen
Sample 1	1.0 g	0.862 g	0.133 g
Sample 2	1.549 g	1.335 g	0.214 g
Sample 3	0.988 g	0.852 g	0.136 g

Could the material be a pure compound?

Answer:

                Analysis

	Mass of Carbon	+	Mass of Hydrogen	=	Mass of Sample
Sample 1	0.862 g	+	0.138 g	=	1.0 g
Sample 2	1.335 g	+	0.214 g	=	1.549 g
Sample 3	0.852 g	+	0.136 g	=	0.988 g

Yes, the material is a pure compound as all the three samples have the same composition.