Question

q4. a radiation technologist is asked to find out how much 25 cc of lead weighs. if lead has a density of 11.34 g/cm3, determine the weight of this mass.

Explanation:

Step1: Recall the density formula

Density formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume. We need to find $m$, so we can rewrite the formula as $m =
ho\times V$.

Step2: Substitute the given values

Given $
ho = 11.34\ g/cm^{3}$ and $V=25\ cm^{3}$ (since $1\ cc = 1\ cm^{3}$). Then $m=11.34\times25$.

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Answer:

The mass of the lead is $283.5\ g$.