Which element has 32 protons in its nucleus

Calculate the number of moles of ethane in 100 grams

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?