The density of a liquid substance is 0.95 g/mL. Three students calculated the density as 0.56 g/mL. Calculate the percent error.

Explanation:

The percentage error of a certain measurement can be found by using the formula

From the question we have

actual number = 0.95 g/mL

error = 0.95 - 0.56 = 0.39

We have

We have the final answer as

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a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.