What is the density of a bar of lead that weighs 173 g and has the following dimensions: l= 2.00 cm, w = 3.00 cm, h = 1.00 in?

Explanation:

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In this case, since the density is defined as the degree of compactness of a substance, and is defined as the mass over the volume:

Given the dimensions of the bar of lead, we can compute the volume as shown below:

Thus, the density turns out:

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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.