. m (C02)=88г,v -?

It looks like you're trying to find the volume (v) of a substance given its mass (m) and possibly its molar mass (C02 = 88 g/mol). However, to calculate the volume, we also need to know the density (ρ) of the substance in question.

The formula to calculate volume is:

\[ v = \frac{m}{\rho} \]

If you're looking to find the volume of carbon dioxide (CO₂), its density at standard conditions (0 °C and 1 atm) is approximately 1.98 g/L.

If you have the mass, you can calculate the volume, for instance:

Given:

• Mass (m) = 88 g
• Density (ρ) = 1.98 g/L

Calculating volume (v):

\[ v = \frac{m}{\rho} = \frac{88 \, \text{g}}{1.98 \, \text{g/L}} \approx 44.44 \, \text{L} \]

You will need to replace the density with the appropriate value for the conditions you're considering if you are not using standard conditions. If you have any additional information or context, please provide it!