What's the final volume of a gas with an initial volume of 75ml if the pressure decreases from 300ml to 200ml? A. 50.0ml B. 112.5ml C. 100.0ml D. 75.5ml

I think the answer is a? You can use ratios to find out the answer

300 ml:75 ml=200 ml:50 ml

300 ml ... 200 ml

75 ml ... x = ?

If you would like to know what is the final volume of a gas, you can calculate this using the following steps:

300 * x = 200 * 75 / 300

x = 200 * 75 / 300

x = 50.0 ml

The correct result would be A. 50.0 ml.