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1 year ago

8

What is the answer to this ?

1 answer:

dybincka [34]1 year ago

5 0

Answer:
D

Explanation:
Because the number of protons is the same as the atomic number, we know what the number of protons has to be 26. The mass number, 55, is the same as the number of protons plus neutrons. Lastly, because there is no charge on this atom, the number of electrons would have to be the same as the number of protons, which is 26.

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Polyatomic ions

Vitek1552 [10]

I believe the answer is A.

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3 years ago

A 25 kg rock is placed in a graduated cylinder with water.the volume of the fluid is 18.3ml.calculate the density of the rock in

ipn [44]

Answer:

=> 1366.120 g/mL.

Explanation:

To determine the formula to use in solving such a problem, you have to consider what you have been given.

We have;

mass (m) = 25 Kg

Volume (v) = 18.3 mL.

From our question, we are to determine the density (rho) of the rock.

The formula:

$p = \frac{m}{v}$

First let's convert 25 Kg to g;

1 Kg = 1000 g

25 Kg = ?

$= \frac{25 × 1000}{1}$

= 25000 g

Substitute the values into the formula:

$p = \frac{25000 g}{18.3 ml}$

= 1366.120 g/mL.

Therefore, the density (rho) of the rock is 1366.120 g/mL.

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2 years ago

The earth rotates on an imaginary line called an?

Pavel [41]

Answer: An axis.

Explanation:

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3 years ago

Read 2 more answers

what happens if you fail a quarter in high school, does that credit not count anymore ? and do i have to retake the class if i p

vampirchik [111]

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4 years ago

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False

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3 years ago