Chemistry, 08.02.2021 21:50 teddybear8728
What color of light does a hydrogen atom emit when an electron transitions from the n=3 energy level to the n=2 energy level?
Answers: 2
Chemistry, 21.06.2019 23:50
How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.
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Chemistry, 22.06.2019 07:50
In which situation can a mixture always be called a solution
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Chemistry, 22.06.2019 09:20
Sugar is dissolved in water. which is the solute? sugar neither both water
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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
What color of light does a hydrogen atom emit when an electron transitions from the n=3 energy level...
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