Methanol (ch3oh) burns according to the equation 2ch3oh(l) + 3o2(g) → 2co2(g) + 4h2o(l), δh°rxn = –1454 kj/mol. how much heat, in kilojoules, is given off when 75.0 g of methanol is burned?

The identities of substances are the same before and after which type of change

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Most metamorphosis processes take place