Chemistry, 15.02.2021 19:30 jahjah1158
Ammonium sulfate, (NH4)2SO4, is often used as a garden fertilizer. If you dissolved
100.0 g of it in water and made 1.0 L of solution:
a. What would the molar concentration of this solution be?
b. What ions would be formed in solution?
c. What is the molar concentration of each ion in solution?
Answers: 2
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
Ammonium sulfate, (NH4)2SO4, is often used as a garden fertilizer. If you dissolved
100.0 g of it i...
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