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3 years ago

15

What scientific principles causes the different layers of the Earth?

1 answer:

neonofarm [45]3 years ago

7 0

Answer: Formation of the Earth's iron core.

Explanation: The stratification of Earth into its geologic layers was brought about by the formation of the Earth's iron core. The iron core was generated by a combination of radioactive decay and gravitation, which raised the temperature enough for molten iron to form.

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What is the independent variable?<br> (For science)

DiKsa [7]

Answer:

The independent variable is what you change in the experiment.

Explanation:

The independent determines the dependent variable.

6 0

3 years ago

During the formation of an ionic compound, the element with the higher ionization energy will gain electrons.

Lesechka [4]

False because you have to take it out and do it right

8 0

3 years ago

What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the

Stels [109]

C because it is maximumly contracted

8 0

3 years ago

Titration of a 20.0-mL sample of acid rain required 1.7 mL of 0.0811 M NaOH to reach the end point. If we assume that the acidit

Rasek [7]

Answer:

Concentration of sulfuric acid in the acid rain sample is 0.0034467 mol/L.

Explanation:

Volume of NaOH = 1.7 ml = 0.0017 L

Molarity of NaOH = 0.0811 M

Moles of NaOH = n

$0.0811 M=\frac{n}{0.0017 L}$

n = 0.0001378 mol

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

According to reaction, 2 mol of NaOH neutralize 1 mol of sulfuric acid.

Then 0.0001378 mol of NaOH will neutralize:

$\frac{1}{2}\times 0.0001378 mol=6.8935\times 10^{-5} mol$ of sulfuric acid.

Concentration of sulfuric acid in the acid rain sample: x

$x=\frac{6.8935\times 10^{-5}}{0.02 L}=0.0034467 mol/L$

Concentration of sulfuric acid in the acid rain sample is 0.0034467 mol/L.

7 0

3 years ago

Why are x-rays telescopes and gamma-ray telescopes in space?

pogonyaev

Because those can leak and cause cancer

5 0

3 years ago