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shusha [124]
3 years ago
15

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?
Chemistry
2 answers:
NARA [144]3 years ago
8 0

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.

Masteriza [31]3 years ago
6 0
I think that the scientist should conclude that there was no chemical reaction. There were no clear evidences that a reaction had occurred. The variation in the volume and the mass was not an indication whether a reaction happened. Hope this answers the question. Have a nice day.
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