Chemistry, 21.02.2020 22:26 josephsalazar123
An electron transitions from n = 5 to n = 3 in a hydrogen atom. What is the energy required for this transition? Is energy emitted or absorbed in the transition?
Answers: 1
Chemistry, 21.06.2019 15:30
Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn
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Chemistry, 21.06.2019 18:00
Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon
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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
An electron transitions from n = 5 to n = 3 in a hydrogen atom. What is the energy required for this...
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