AnswersCA-Chemistry AThe Nucleus

The Nucleus Answers

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1
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Which of these forces are acting within a nucleus? Check all that apply.

A
strong nuclear force
B
electrostatic forces of attraction
C
electrostatic forces of repulsion
2
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m stands for ,

A
mass
B
meter
C
momentum
D
miles
3

and c stands for

A
centripetal force.
B
Celsius.
C
centi-.
D
speed of light.
4

Which of these conditions most likely produces an unstable isotope?

A
equal numbers of protons and neutrons in a small nucleus
B
equal numbers of protons and neutrons in a large nucleus
C
more neutrons than protons in a nucleus
D
more electrons than protons in an atom
5

In the equation E = mc2, E stands for ,

A
endothermic
B
energy
C
exothermic
D
electricity
6

Calculate the amount of energy produced by the conversion of 50.0 kg of mass into energy. Use 3.00 x 108 m/s for the speed of light. Round to 3 significant digits.Which setup will solve this problem?

A
E = (50.0 kg)(3.00 x 108 m/s)
B
E = (50.0 kg)(3.00 x 108 m/s)2
C
E = (50.0 kg)(3.00)(1 x 108 m/s)2
7

A carbon-12 atom has a mass defect of 0.09564 amu. Which setup is used to calculate nuclear binding energy?

A
0.09564 amu x (1.6606 x 10–27 kg)/amu x (3.0 x 108)2
B
0.09564 amu x 1 amu/(1.6606 x 10–27 kg) x (3.0 x 108)2
C
0.09564 amu x (3.0 x 108)2
D
0.09564 amu x (1.6606 x 10–27 kg)/amu x (3.0 x 108)

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The Nucleus Answers — CA-Chemistry A