What are the three important benefit to the soil provides

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure