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Ira Lisetskai [31]
2 years ago
5

1. Given an element's atomic number and mass number, how can you tell the number of protons and neutrons in its nucleus?

Physics
2 answers:
DanielleElmas [232]2 years ago
8 0
C. Number of protons = atomic number; number of neutrons = mass number - atomic number
tatiyna2 years ago
6 0

Answer:

last one. c

Explanation:

atomic number; number of neutrons = mass number - atomic number​ is the very important to find the number of the question.

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8-30-2018 what phase change occurs as the substance at 0 degree c has its pressure dropped from 0.50 at to 0.25 atm
madam [21]

Answer:

at T = 0ºC the change of state is from the solid state to the gaseous state

Explanation:

In this exercise we are asked about the changes of state, from the data we will assume that the material is water.

Water can exist in three solid states, liquid and gas, in a graph of pressure ℗ against temperature (T) there is a point called triple at T = 0.01ºC, below this point the curve has two states at high pressure solid and low pressure gas.

As a result of the previous ones at T = 0ºC the change of state is from the solid state to the gaseous state

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Explanation:

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Which nucleus completes the following equation?<br> A. 299 Np<br> B. 20Pa<br> C. 2 Pa<br> D. - Np
blondinia [14]

Answer:

Option D. ²³⁹₉₃Np

Explanation:

Let the unknown be ʸₓA.

Thus, the equation becomes:

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Next, we shall determine the x, y and A. This can be obtained as follow:

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92 + 1 = x

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x = 93

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Thus, the complete equation is:

²³⁹₉₂U —> ⁰₋₁e + ²³⁹₉₃Np

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