How do you balance
c2h2 + o2 -> co2 + h2o? ?

is it c2h2 + 5/2 o2 -> 2co2 + h2o
or 2c2h2 + 5o2 -> 4co2 + 2h2o ?

What is the chemical formula of the following compound

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!