How do you find a neutron number?

1 answer:

6 0

The atomic mass of an element is the sum of the number of protons, neutrons, and electrons. Because electron mass is virtualy none it contributes to very little of an element's mass.

Thus the atomic mass is the sum of the number of electrons and protons.

Therefore the number of neutrons can be found by subtracting the number of protons from the atomic mass

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Which is an example of chemical change

Oksanka [162]

Mixing of posted colours

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andreev551 [17]

Answer:

False.

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allochka39001 [22]

All you need to do the cross the charges and put it as suffixes.

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Alborosie

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4 years ago

A gas occupies 100.0 mL at a pressure of 780 mm ahh. What is the volume of the gas when it’s pressure is increased to 880 mm Hg

vlabodo [156]

Hello!

The volume of the gas when its pressure is increased to 880 mm Hg is 88,64 mL

This question can be easily answered using the Boyle's Law, which states that as pressure increases, the volume is lower. It can be expressed in a mathematical way as follows:

$P_1*V_1=P_2*V_2$

So, from this equation we can clear V₂ to find the volume at 880 mm Hg:

$V_2= \frac{P_1*V_1}{P_2}= \frac{780 mmHg*100 mL}{880 mmHg}=88,64 mL$

Have a nice day!

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3 years ago