please answer each part

Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) ar gaseous water (H2O). If 0.439g of water is produced from the reaction of 0.48g of methane and 1.3g of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it. Nitrogen dioxide (NO2) gas and liquid water (H2O) react to form aqueous nitric acid (HNO3) and nitrogen monoxide ( NO) gas. Suppose you have 1.0mol of NO2 and 5.0mol of H2O in a reactor. Suppose as much as possible of the NO2 reacts. How much will be left? Round your answer to the nearest 0.1mol. The drawing below shows a mixture of molecules: \begin{tabular}{|c|l|} \hline \multicolumn{2}{|c|}{ key } \\ carbon & hydrogen \\ nitrogen & sulfur \\ oxygen & chlorine \\ \hline \end{tabular} Suppose the following chemical reaction can take place in this mixture: 4NH3(g)+5O2(g)4NO(g)+6H2O(g)