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Stoichiometry

#### Q. Calculate the grams of manganese (II) oxide produced from the reaction that oxidizes. 25.0 mg of iron 2 ion to iron 3 ion in an acidic medium while it reduces 1.24 mL of 0.0178 M solution of permanganate ion to manganese (II) oxide.

Solved • Apr 12, 2020

Stoichiometry

#### Q. CH4 + 2 O2 -> CO2 + 2 H2O If 8.32 g of methane reacts, how much O2 is used?

Solved • Apr 11, 2020

Stoichiometry

#### Q. Mg(s) + 2HCl (aq) --> H2 (g) + MgCl2 (aq) is the balanced equation. How many moles of hydrogen gas is given if 3.09g of magnesium metal is used in the reaction?

Solved • Apr 9, 2020

Stoichiometry

#### Q. How many reactant species (molecules/formula units/atoms) will react in the reaction represented by the equation below? Assuming that it's a 100% yield. 2 Co2O3(s) + 3 C(s) → 4 Co(s) + 3 CO2(g) [Balanced Equation] Would it be 5, 7, or 12 moles? I'm not sure how to approach this problem exactly.

Solved • Apr 8, 2020

Stoichiometry

#### Q. 2Al(s) + 3Cl2(g) → 2AlCl3(s) You are given 20.0 g of aluminum and 25.0 g of chlorine gas . If you had excess aluminum, how many moles of aluminum chloride could be produced from 25.0 g of chlorine gas, Cl2? Express your answer to three significant figures and include the appropriate units.

Solved • Mar 12, 2020

Stoichiometry

#### Q. 2Al(s) + 3Cl2(g) → 2AlCl3(s) You are given 20.0 g of aluminum and 25.0 g of chlorine gas . If you had excess chlorine, how many moles of aluminum chloride could be produced from 20.0 g of aluminum? Express your answer to three significant figures and include the appropriate units.

Solved • Mar 12, 2020

Stoichiometry

#### Q. Calculate [HgCl42−] in a solution prepared by adding 0.0200 mol of NaCl to 0.250 L of a 0.100-MHgCl2 solution.

Solved • Mar 28, 2020