3 years ago

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

Chemistry

1 answer:

schepotkina [342]3 years ago

5 0

subtract the atomic mass from the atomic number

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Discuss how to separate a mixture of iron fillings, salt, sand, and wood chips.

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4 years ago

Identify each of these substances as acidic, basic, or neutral.

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3 years ago

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3 years ago

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3 years ago

The temperature in a town started out at 55 degrees. By the end of the day the temperature dropped to -6 degrees.

garik1379 [7]

Answer:

The choice of the answer is fourth option that is -61 degrees.

Therefore the temperature drop is -61°Centigrade.

Explanation:

Given:

The temperature in a town started out at 55 degrees

Start temperature = 55°Centigrade. (Initial temperature)

End of the Day = -6°Centigrade. (Final temperature)

To Find:

How far did the temperature drop?

Solution:

We will have,

$\textrm{Temperature drop}=\textrm{Final temperature}-\textrm{Initial temperature}$

Substituting the above values in it we get

$\textrm{Temperature drop}=-6-55\\\\\therefore \textrm{Temperature drop}=-61\° centigrade$

Therefore the temperature drop is -61°Centigrade.

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4 years ago