3. Chemical Reactions

A dime weighs 2.5 g. If 1 kg of dimes is collected, what is the total dollar value of these dimes?

What is the expected mass of KHP (potassium hydrogen phthalate) required to react completely with 44.32 mL of KOH solution if the molarity of KOH is 0.566 M?

How many grams of KNO_3 (formula weight 101.1 g/mol) are required to prepare 1.00 L of a solution containing 125 mg/L of nitrogen (N)?

The common fertilizer NH4NO3(s) can explosively decompose according to the following reaction: 2 NH4NO3(s) → 2 N2(g) + O2(g) + 4 H2O(g). ΔH = -236.15 kJ/mol. What is the heat released when 80.06 g of NH4NO3(s) explodes? Molar mass of NH4NO3(s) = 80.06 g/mol.

In the reaction N2 + 3H2 → 2NH3, which of the following is the correct method to convert moles of N2 to moles of NH3?

When one formula unit of MgBr_2 is dissolved in water, how many individual ions are produced?

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 $N_2$?

Based on the mole ratio you determined in part c, how many moles of H2O are produced when 2 moles of H2 react completely with excess O2 according to the equation: 2 H2 + O2 → 2 H2O?

The reaction between potassium chlorate and red phosphorus

In the following equation how many moles of aluminum chloride are produced from 2.50 mol of hydrochloric acid?

2 Al (s) + 6 HCl(aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

A 3.00 L solution of 0.0200 M ammonium sulfide ((NH_4)_2S) is prepared. What is the mass of (NH_4)_2S present in the solution? (Molar mass of (NH_4)_2S = 68.15 g/mol)

If 5 moles of Cl_2 react completely with excess Na according to the equation 2 Na + Cl_2 → 2 NaCl, how many moles of NaCl are produced?

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?

Given the reaction: Fe3O4 + 4 H2 → 3 Fe + 4 H2O, how many grams of Fe3O4 are required to react completely with 300 grams of H2?