`2H_2+O_2rarr2H_2O`: What is the ratio between the reactant molecules in the above reaction?

Based on the reaction given below, write the answer for the questions. N_2+3H_2rarr2NH_3 . Write the ratio of the reactant molecules and product molecules.

2H_2+O_2rarr2H_2O : How many water molecules are formed when 1000 H_2 molecules are reacted co-mpletely?

The balanced chemical equation of a reaction (at STP) is given below. 2H_(2((g))+O_(2(g))rarr2H_2O_((g)) : Calculate the mass of water formed as a result of the reaction (a).

Given the redox reaction: CuO (s) + H_2(g)harr Cu(s) + H_2O(g) Identify the reductant and oxidant in the above reaction .

Consider the reactions. a) 6 CO_2(g)+6 H_2 O(l) rarr C_6 H_(12) O_6(aq)+6 O_2(g) b) O_3(g)+H_2 O_2(l) rarr H_2 O_2(l)+2 O_2(g) Why it is more appropriate to write these reactions as: a) 6 CO_2(g)+12 H_2 O(l) rarr C_6 H_12 O_6(aq)+6 H_2 O(l)+6 O_2(g) b) O_3(g)+H_2 O_2(l) rarr H_2 O(l)+O_2(g)+O_2(g) Also suggest a technique to investigate the path of the above (a) and (b) redox reactions.