1CaC2 + 2O2 ---> 1Ca+2CO2
I need the mole to mole ratio.​

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?