Chemistry, 28.07.2019 11:30 c1100321311
What is the subject in this simple sentence? arabian, appaloosa, and morgan horses will be at the county horse show this week. a. arabian b. appaloosa c. horses d. morgan
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What would you do if you told the guy you liked that you liked him
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Why is the structure of molecule important to its function?
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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.)
Answers: 1
What is the subject in this simple sentence? arabian, appaloosa, and morgan horses will be at the c...
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