How much heat is needed for the decomposition of 168.4 g of sodium nitride into nitrogen and sodium? Your answer should have 4 significant figures in it make sure you include a positive or negative symbol as a part of your answer. 2Na3N ---> N2 + 6Na. \DeltaΔH = +42.7 kJ

Use 14.01 g/mol = N

Use 22.99 g/mol= Na

Time remaining 58: 10 an atom that has 84 protons and 86 neutrons undergoes a reaction. at the end of the reaction, it has 82 protons and 84 neutrons. what happened to the atom? it accepted radiation in a chemical reaction it donated neutrons to another atom in a chemical reaction it emitted an alpha particle in a nuclear reaction. it accepted protons in a nuclear reaction. mark this and retum save and exit next submit