given: ch4 + 2o2 → co2 + 2h2o, δh = -890 kj/mol how much energy is released when 59.7 grams of methane (ch4) reacts with oxygen? the combustion of 59.7 grams of methane releases kilojoules of energy.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

What is happening when the water inside a kettle heats up and begins to boil

The bohr model of the atom explained why emission spectra are discrete. it could also be used to explain the photoelectric effect. which is a correct explanation of the photoelectric effect according to the model?