Question

The actual density of pennies made before 1982 is about 8.8 g/mL. The actual density of pennies made after 1982 is about 7.2 g/mL. Compare your results with these accepted values. What could you have done differently to obtain results closer to the accepted values?

Answer 1

To obtain more accurate values of the densities of the pennies:

• more trials can be conducted to reduces the effect of measurement errors
• more care should be taken in taken volume measurements by displacement of water to avoid splashing of water.

What is density of a substance?

The density of a substance is the ratio of the mass of the substance to the volume of that substance.

It is a measure of the compactness of the matter in a substance.

The densities of the pennies made before 1982 was 8.7 g/ml

The actual density of pennies made before 1982 is about 8.8 g/mL.

The densities of the pennies made after 1982 was 6.9 g/ml

The actual density of pennies made after 1982 is about 7.2 g/mL.

Due to several random and experimental errors, the values obtained from the experiment are not exactly the same with the accepted values.

To obtain more accurate values:

• more trials can be conducted to reduces the effect of measurement errors
• more care should be taken in taken volume measurements by displacement of water to avoid splashing of water.

In conclusion, the densities varied as as a result of random and experimental errors.

Learn more about density at: brainly.com/question/1354972

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