Question

A sample of hydrogen at 1.56 atm had it's pressure decreased to 0.73 atm producing a new volume of 751 mL. What was its original volume?

Answer 1

This is probably too late but the answer is 351

Step-by-step explanation:

0.73x751=548.23

After getting both new pressure and new volume and having only one original pressure which is 1.56 you´ll have to divide 548.23 by 1.56 and you´ll end up with 351 which should be the original volume.