When 30.00g of water is cooled from 80.00c to 20.00c how much heat is lost

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same