Chemistry, 05.05.2020 10:56 Shelleycarousel
30 POINTS Explain why you agree or disagree with the following proposals made by various analysts as ways to solve U. S. energy problems: a. Oil companies should find and develop more domestic supplies of crude oil to increase domestic oil production and reduce dependence on imported oil. b. The government should place a heavy tax on gasoline and imported oil to reduce the consumption of crude oil resources and encourage the use of alternative energy sources. c. There should be a switch to greater dependence on coal as an energy resource. d. There should be a switch to greater dependence on nuclear power as an energy resource.
Answers: 1
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 23:30
The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth
Answers: 1
30 POINTS Explain why you agree or disagree with the following proposals made by various analysts as...
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