For the balanced chemical reaction $N_2+3H_2\to 2N_1{H}_3$, what is the mole ratio of $N_1{H}_3$ to $N_2$?

A solution contains 0.400 L of 0.350 M KBr. What is the mass of KBr (in grams) present in the solution?

Given the following data table for the reaction: 2 H2 + O2 → 2 H2O, if you start with 4.0 mol of H2 and 2.0 mol of O2, how many moles of H2O will be produced?

In a stoichiometry lab, you react 2.00 mol of HCl with 1.00 mol of CaCO3. According to the balanced equation CaCO3 + 2 HCl → CaCl2 + CO2 + H2O, what is the limiting reactant?

In the balanced reaction $N_2+3H_2\to 2{\mathrm{NH}}_3$, what is the mole ratio of hydrogen gas to ammonia ($H_2:{\mathrm{NH}}_3$)?

For the balanced combustion reaction $C_3{H}_8+5O_2\to 3{\mathrm{CO}}_2+4H_{2}O$, which option gives the correct mole ratio between propane and oxygen?

In stoichiometry, how do you determine the mole ratio between $N_2$ and $H_2$ in the balanced equation $N_2+3H_2\to 2N_{H_3}$?

Calculate the mass of 4.50 × 10²⁵ O₃ molecules.

Ammonium nitrate (NH₄NO₃), a common fertilizer, is 35.0% nitrogen by mass. How much ammonium nitrate contains 1.25 kg of nitrogen?