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Chemistry, 18.07.2019 00:10 caitybugking
Study the following reaction carefully. what classification should this reaction have? h2so4 2naoh na2so4 2h2o synthesis decomposition single replacement neutralization
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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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Study the following reaction carefully. what classification should this reaction have? h2so4 2naoh...
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