Chemistry, 08.09.2020 09:01 dgonzale1857
0.820 L mass of 2.56 kg. what is the density of this liquid in kg/L?
Answers: 3
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
Chemistry, 22.06.2019 12:00, winterblanco
What is the lowest number energy level where a d sublevel is found
Answers: 1
Chemistry, 22.06.2019 22:30, needhelpasap8957
Why is the bottom layer of a trophic pyrimid the
Answers: 2
0.820 L mass of 2.56 kg. what is the density of this liquid in kg/L?...
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