3Ba(s)+N2 (g)--> BaN2(s) How many moles of barium metal react to produce 0.270 mol of barium nitride?
Express your answer with the appropriate units.

0.81 mol

Explanation:

Since the mole ratio of Ba : BaN2 = 3 : 1 (which can be seen from the balanced equation)

Therefore, 3 moles of Barium metal will produce 1 mole of BaN2.

With this ratio, let the no. of moles of barium metal be x.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.