If 5.00 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?

Question

2 NH3(g) + 3 O2(g) + 2 CH4(g) 2 HCN(g) + 6 H2O(g)

Answer 1

You don't have an equation. Where is the arrow? I can't tell the reactants from the products.

Answer 2

the equation goes as follows:
2 NH3(g) + 3 O2(g) + 2 CH4(g) ---> 2 HCN(g) + 6 H2O(g)

I need help with this, also!