Chemistry, 24.03.2021 18:40 hhvgbv7147
If you need 0.0592 moles of nitrogen, how many grams of nitrogen do you need to mass(weigh) on the balance?
Answers: 3
Chemistry, 22.06.2019 11:40
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 21:00
One similarity and one difference between an element and a mixture of elements
Answers: 1
Chemistry, 23.06.2019 00:30
Fred is studying a substance that is made out of only one element. this means that
Answers: 1
Chemistry, 23.06.2019 01:00
How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.
Answers: 2
If you need 0.0592 moles of nitrogen, how many grams of nitrogen do you need to mass(weigh) on the...
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