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Stoichiometry

Q. Solid lead nitrate is slowly added to 75.0 mL of a 0.0555 M sodium sulfate solution. The concentration of lead ion required to just initiate precipitation is M.

Solved • Apr 21, 2020

Stoichiometry

Q. How many mL of 0.2860 M sulfuric acid are required to react with 58.42 mL of 0.09756 M iron(III) hydroxide

Solved • Apr 20, 2020

Stoichiometry

Q. how many moles of NaCl can be formed if 10 mol of NaOH were to react? 6NaOH + 3Cl2 → NaClO3 + 5NaCl + 3H2O

Solved • Apr 20, 2020

Stoichiometry

Q. Assume that you have 1.45 g of nitroglycerin in a 662.0 mL steel container at 20.0 °C and 1.00 atm pressure. An explosion occurs, raising the temperature of the container and its contents to 425 °C. The balanced equation is 4 C3H5N3O9(l) → 12 CO2(g) + 10H2O(g) + 6 N2(g) + O2(g) (Figure 1) How many moles of gas are in the container after the explosion?

Solved • Apr 13, 2020

Stoichiometry

Q. A 1.545 g solid sample of an unknown containing iron (II) in the dissolved sample requires 32.85 mL of a 0.025 M KMnO4 solution to reach the pink end point of the titration. Calculate the mass of iron in the sample (in grams) and the percentage of iron in the sample.

Solved • Apr 17, 2020

Stoichiometry

Q. Aluminum reacts with excess copper(II) sul- fate according to the unbalanced reaction Al(s) + CuSO4(aq) −→ Al2(SO4)3(aq) + Cu(s) If 2.98 g of Al react and the percent yield of Cu is 46.4%, what mass of Cu is produced? Answer in units of g.

Solved • Apr 17, 2020

Stoichiometry

Q. For the following balanced equation: C5H12(l) + 8O2 → 5CO2(g) + 6H2O(g). How many grams of CO2(g) will be formed when 10.0 g of C5H12(l) are burned with excess O2(g)?

Solved • Apr 16, 2020