Consider the chemical equations shown here. What is the overall enthalpy of reaction for the equation shown below? Please don't just give me the answer and say on edge I need an explanation

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

What is the empirical formula for c4h8o2

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