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Health, 23.10.2019 18:00, cortneykeeler

Why is it important to keep our acid food away from zinc coated tub

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Chemistry, 22.06.2019 11:40, Wemaybewrong

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.)

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Health, 20.10.2019 10:30, martinegp

Why is it important to keep high acid food away from a zinc coated tub

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Business, 20.10.2019 15:00, littledogy13

Why is it important to keep high acid food away from a zinc coated tub?

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