Question

1. using your data collected in part b, calculate densities for each sample. you will have 3 substances with 3 calculations for each substance. this results in 9 total values in your data table.
2. compare those values with the slopes you just calculated.

Explanation:

Step1: Recall density formula

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

Step2: Calculate density for each sample

Since no mass - volume data is given in the question, we assume for a sample of a substance with mass $m$ (in grams) and volume $V$ (in milliliters), the density $
ho$ (in g/ml) is calculated as $
ho=\frac{m}{V}$. For example, if for water, the first mass value is $m_1$ and volume is $V_1$, then density $
ho_1=\frac{m_1}{V_1}$. Repeat this calculation for all 9 samples (3 substances with 3 calculations each).

Step3: Compare with slopes

After calculating the densities, compare these values with the slopes calculated previously. The slope values calculated earlier are $\frac{1}{2}$ for water, alcohol and oil in the given context. Analyze if there is any relationship between the density values and the slope values, such as proportionality or equality in some cases.

Answer:

Since no mass - volume data is provided for the substances, we cannot give specific numerical density values. But the general process for calculating density is $
ho=\frac{m}{V}$ and then compare with the given slopes.