Question

Questions #1, 2, and 3 all refer to this reaction: 3 Cu(s) + 8 HNO$_3$(aq) $\rightarrow$ 3 Cu(NO$_3$)$_2$(aq) + 2 NO(g) + 4 H$_2$O(l) 7B-1. How many grams of copper(II) nitrate are produced when 340.0 grams of nitric acid react? 7B-2. How many nitrogen monoxide molecules are produced by the reaction of 15.0 mL of 0.688 M HNO$_3$ solution? 7B-3. What volume of copper must react to produce 253 grams of water? The density of copper is 8.79 g/cm$^3$. 78-4. A 20.00 mL sample of an unknown phosphoric acid solution is titrated with a 0.3684 M sodium hydroxide solution. It takes 31.07 mL of the base solution to reach the endpoint. a. Write a balanced chemical equation for the reaction that occurs. b. What is the molarity of the unknown acid solution? 78-5. Suppose 175 grams of barium and 325 grams of iron(III) iodide are combined together with water in a beaker, and the following reaction occurs: 3 Ba(s) + 2 FeI$_3$(aq) $\rightarrow$ 2 Fe(s) + 3 BaI$_2$(aq) a. Which reactant is the limiting reactant? b. Briefly explain how you know which reactant is limiting. Be specific. Use complete sentences. c. How many grams of all four reaction substances are in the beaker at the end of the reaction? d. What is the percent yield if 38 grams of iron are actually collected?

          Questions #1, 2, and 3 all refer to this reaction:
3 Cu(s) + 8 HNO$_3$(aq) $\rightarrow$ 3 Cu(NO$_3$)$_2$(aq) + 2 NO(g) + 4 H$_2$O(l)
7B-1. How many grams of copper(II) nitrate are produced when 340.0 grams of nitric acid react?
7B-2. How many nitrogen monoxide molecules are produced by the reaction of 15.0 mL of 0.688 M HNO$_3$
solution?
7B-3. What volume of copper must react to produce 253 grams of water? The density of copper is 8.79 g/cm$^3$.
78-4. A 20.00 mL sample of an unknown phosphoric acid solution is titrated with a 0.3684 M sodium
hydroxide solution. It takes 31.07 mL of the base solution to reach the endpoint.
a. Write a balanced chemical equation for the reaction that occurs.
b. What is the molarity of the unknown acid solution?
78-5. Suppose 175 grams of barium and 325 grams of iron(III) iodide are combined together with water in
a beaker, and the following reaction occurs:
3 Ba(s) + 2 FeI$_3$(aq) $\rightarrow$ 2 Fe(s) + 3 BaI$_2$(aq)
a. Which reactant is the limiting reactant?
b. Briefly explain how you know which reactant is limiting. Be specific. Use complete sentences.
c. How many grams of all four reaction substances are in the beaker at the end of the reaction?
d. What is the percent yield if 38 grams of iron are actually collected?

Questions #1, 2, and 3 all refer to this reaction:
3 Cu(s) + 8 HNO3(aq) → 3 Cu(NO3)2(aq) + 2 NO(g) + 4 H2O(l)
7B-1. How many grams of copper(II) nitrate are produced when 340.0 grams of nitric acid react?
7B-2. How many nitrogen monoxide molecules are produced by the reaction of 15.0 mL of 0.688 M HNO3
solution?
7B-3. What volume of copper must react to produce 253 grams of water? The density of copper is 8.79 g/cm^3.
78-4. A 20.00 mL sample of an unknown phosphoric acid solution is titrated with a 0.3684 M sodium
hydroxide solution. It takes 31.07 mL of the base solution to reach the endpoint.
a. Write a balanced chemical equation for the reaction that occurs.
b. What is the molarity of the unknown acid solution?
78-5. Suppose 175 grams of barium and 325 grams of iron(III) iodide are combined together with water in
a beaker, and the following reaction occurs:
3 Ba(s) + 2 FeI3(aq) → 2 Fe(s) + 3 BaI2(aq)
a. Which reactant is the limiting reactant?
b. Briefly explain how you know which reactant is limiting. Be specific. Use complete sentences.
c. How many grams of all four reaction substances are in the beaker at the end of the reaction?
d. What is the percent yield if 38 grams of iron are actually collected?

Added by Caitlyn E.

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