HELL PLEAAASSS FAST You have the following interaction:
2CH3OH + 3O2 ==> 2CO2 + 4H2O
1)Calculate the heat of reaction (Dh ).
2)Write a thermochemical equation to report this reaction
3)What is the mass of water produced by the reaction of 4000 liters of oxygen?
4)The amount of energy associated with the combustion of 15 kg of ethanol

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Explain that newton first law,second law and third law of motion?

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?