Question

15 formula 1 point a student collects co₂ gas in a gas collection tube. the student determines the mass of the gas to be 9.5 g. the student determines the volume of the gas to be 53.1ml. determine the density of the gas in g/ml. express your answer with 2 decimal places. answer 16 formula 1 point a student wishes to determine the density of an unknown liquid. the student measures the liquid with a 20.00ml pipet. the student determines that the mass of the liquid is 8.6 g. what is the density of the unknown liquid? round your answer to 2 decimal places. answer

Explanation:

Question 15

Step1: Recall density formula

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

Step2: Substitute values

Given $m = 9.5\ \text{g}$, $V = 53.1\ \text{mL}$. Substitute into formula: $
ho=\frac{9.5}{53.1}$.

Step3: Calculate and round

$\frac{9.5}{53.1}\approx0.18\ \text{g/mL}$ (rounded to 2 decimal places).

Step1: Recall density formula

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

Step2: Substitute values

Given $m = 8.6\ \text{g}$, $V = 20.00\ \text{mL}$. Substitute into formula: $
ho=\frac{8.6}{20.00}$.

Step3: Calculate and round

$\frac{8.6}{20.00}=0.43\ \text{g/mL}$ (rounded to 2 decimal places).

Answer:

$0.18$

Question 16