What is the change in enthalpy when 9.75 g of aluminum reacts with excess ammonium nitrate (NH4NO3) according to the equation:

2Al + 3NH4NO3  3N2 + 6 H2O + Al2O3 ΔH = -2030kJ

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

Chemistry worksheet - i am not sure what they are asking for exactly?