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3 years ago

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What is the total number of neutrons in an atom of an element that has a mass number of 19 and an atomic number of 9?

1 answer:

FromTheMoon [43]3 years ago

7 0

Your answer should be B.) 10

The atomic mass of an element is the sum of the element's protons and neutrons. The atomic number of an element is equal to its number of protons. To find the amount of neutrons in an atom, subtract the atomic number from the atomic mass. 19 - 9 = 10.

Hope this helps!

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3 years ago

Read 2 more answers

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3 years ago

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marusya05 [52]

Answer:

The solution and the explanation are in the Explanation section.

Explanation:

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The torque due to effort at C point is:

TC = E * (b * cosθ)

The net torque is equal to 0, we have:

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3 years ago

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Answer:

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