A piece of pure copper was determined to have a volume of 433.23 mm^3. The densi

Question

A piece of pure copper was determined to have a volume of 433.23 mm^3. The density of pure copper near room temperature is 8.96 g/cm^3. If you were to weigh this piece of copper given this data, determine the number of significant figures for the mass you would need using the balance shown. Additionally, determine the number of significant figures you would report this mass based on the calculation for the density and volume. Number of significant figures mass would be reported to based on the given density and volume:

Explanation / Answer

we have

volume = 433.23 mm3 = 0.43323 cm^3

and

density = 8.96 g/cm^3

therefore

mass = 3.88174 grams

and balance shows a mass = 3.8817 grams

but

the calculated mass = 3.88 grams

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