Question

6 formula 1 punto
a student collects co₂ gas in a gas collection tube. the student determines the mass of the gas to be 2,7 g. the student determines the volume of the gas to be 72.5ml. determine the density of the gas in g/ml. express your answer with 2 decimal places.
respuesta

7 formula 1 punto
what is the density of a metal that weighs 8,44 g and has a volume of 8.0ml? express your answer with 2 decimal places.
respuesta

Explanation:

Question 6

Step1: Recall density formula

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

Step2: Substitute values

Given $m = 2.7\,\text{g}$, $V = 72.5\,\text{mL}$. So $
ho=\frac{2.7}{72.5}$.

Step3: Calculate and round

$\frac{2.7}{72.5}\approx0.0372\approx0.04$ (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 $m = 8.44\,\text{g}$, $V = 8.0\,\text{mL}$. So $
ho=\frac{8.44}{8.0}$.

Step3: Calculate and round

$\frac{8.44}{8.0} = 1.055\approx1.06$ (rounded to 2 decimal places).

Answer:

$0.04$

Question 7