The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. what is the mass defect

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

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

What energy is it when you flip on a switch on a lamp