A scientist compares two samples of white powder. one powder was present at the beginning of an experiment. the other powder was present at the end. she wants to determine whether a chemical reaction has occurred. she finds that neither sample bubbles or dissolves in water. she measures the mass and volume of the solids. sample one has a volume of 45 cm3 and a mass of 0.5

g. sample two has a volume of 65 cm3 and a mass of 1.3

g. what should the scientist conclude?

Question

27-11-2016
Chemistry

Answered

A scientist compares two samples of white powder. one powder was present at the beginning of an experiment. the other powder was present at the end. she wants to determine whether a chemical reaction has occurred. she finds that neither sample bubbles or dissolves in water. she measures the mass and volume of the solids. sample one has a volume of 45 cm3 and a mass of 0.5

g. sample two has a volume of 65 cm3 and a mass of 1.3

g. what should the scientist conclude?

Verified Answer :

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IlaMends IlaMends · Answer 1 · 2018-10-11T09:04:34-04:00

Answer. Chemical reaction had occurred and both the powders are different substances.

Explanation:

As density is an intensive property of the substance.Which means that different substance have different densities.

Density = \(\frac{mass}{volume}\)

Density of powder 1, \(d_1=\frac{0.5g}{45cm^3}=0.11g/cm^3\)

Density of powder 2, \(d_2=\frac{1.3g}{65cm^3}=0.02g/cm^3\)

On comparing both the densities of the powders we can say that both the substances are different. So we can conclude that the chemical reaction had occurred.