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Chemistry, 13.04.2021 17:40 organdonor626
Find the number of grams of zinc (Zn) metal that will completely react with 730
grams of hydrochloric acid (HCl) to produce zinc chloride (ZnCl2) and hydrogen gas
(H2).
Write the balanced chemical equation.
Use coefficients from balanced equation to determine mole ratio.
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Answers: 1
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
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Find the number of grams of zinc (Zn) metal that will completely react with 730
grams of hydrochlor...
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