The combustion of propyne, C3H4, releases heat when it burns according to the following equation: C3H4(g) + 4O(g) —> 3CO2(g) + 2H2O

Could someone help with these 3 problems?

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Draw two cyclic constitutional isomers of cis-1

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it