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tankabanditka [31]
2 years ago
8

Electron transition can be likened to moving up and down a ladder. Which of the following statements best describes how an elect

ron transitions in an electron cloud?
A. An electron can only gain or lose energy to move between quantized energy levels.
B. An electron can only gain or lose charge in integers when ions are formed.
C. An electron can only change its mass in quantized amounts when it gains or loses energy.
D. An electron can only change into certain types of particles when it gains or loses charge.​
Chemistry
1 answer:
Nastasia [14]2 years ago
8 0

Answer:

C. An electron can only change its mass in quantized amounts when it gains or loses energy.

Explanation:

  • The electron mostly acts in a wave form and shales the orbit and in other worlds the electron transition to  lower energy change its wave shape and sinks less but it does not leap or bounce back anywhere.
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How many moles of aluminum metal are required to produce 4.04 L of hydrogen gas at 1.11 atm and 27 °C by reaction with HCl? ​
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Answer:

0.121 moles of aluminum metal are required to produce 4.04 L of hydrogen gas at 1.11 atm and 27 °C by reaction with HCl

Explanation:

This is the reaction:

2 Al(s) + 6 HCl(aq) → 2 AlCl₃ (aq) + 3 H₂(g)

To make 3 moles of H₂, we need 2 moles of Al.

By conditions given, we will find out how many moles of H₂ do we have.

Let's use the Ideal Gas Law

P. V = n . R . T

1.11 atm . 4.04L = n . 0.082 L.atm/mol.K . 300K

(1.11 atm . 4.04L) / (0.082 mol.K/L.atm . 300K) = n

0.182 mol = n

So the rule of three will be:

If 3 moles of H₂ came from 2 moles of Al

0.182 moles of H₂ will come from x

(0.182 .2) / 3 = 0.121 moles

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Strontium and chlorine react to form strontium chloride with the formula SrCl2.
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3 years ago
What does a hygrometer measure?
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