A student determined that 2.5 grams of methane, CH4, produced 139kJ of heat in a bomb calorimeter. What is ΔE(rxn) for the combustion of methane in kJ/mole CH4?

Can you guys me with question no. 5!

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

What is the empirical formula for c4h8o2