Question

1. a piece of metal has a volume of 30.0 cm³ and a mass of 252 g. what is its density? what metal do you think this is?

Explanation:

Step1: Recall the density formula

The formula for density ($
ho$) is $
ho = \frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Substitute the given values

Given $m = 252\ \text{g}$ and $V = 30.0\ \text{cm}^3$. Substitute into the formula: $
ho=\frac{252\ \text{g}}{30.0\ \text{cm}^3}$.

Step3: Calculate the density

$\frac{252}{30.0}=8.4\ \text{g/cm}^3$.

Step4: Identify the metal

By comparing with known metal densities, a density of $8.4\ \text{g/cm}^3$ is close to the density of brass (or could be other similar metals, but brass is a common one with density around this value).

Answer:

The density is $8.4\ \text{g/cm}^3$, and the metal is likely brass (or a similar metal with a density around this value).