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4 years ago

5

All bodies of water make up a earth's

2 answers:

Margaret [11]4 years ago

4 0

The answer is c hydro sphere

Delvig [45]4 years ago

3 0

Hey there!

The answer is C, hydrosphere.

The prefix "hydro" means water.

"Sphere" relates to Earth.

The asthenosphere and lithosphere are parts of the crust and mantle of the earth.

The atmosphere is the gases that surround the planet.

Hope this helps!

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What happens in the distillation flask and condenser during distillation.

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Explanation:

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3 years ago

A scientist has a 98,3 g sample of silicon, How many silicon atoms are in the sample?

Leno4ka [110]

The number of silicon atoms that are in this sample is: B. $2.11 \times 10^{23} \;atoms$

<u>Given the following data:</u>

Mass of silicon = 98.3 grams

<u>Scientific data:</u>

Avogadro's number = $6.02 \times 10^{23}$

Molar mass of silicon = 28.09 g/mol.

To determine the number of silicon atoms that are in this sample:

First of all, we would determine the number of moles contained in 98.3 grams of silicon.

$Number\;of\;moles = \frac{mass}{molar\;mass}\\\\Number\;of\;moles = \frac{98.3}{28.09}$

Number of moles = 3.4995 moles

<u>By stoichiometry:</u>

1 mole of silicon = $6.02 \times 10^{23}$ atoms

3.4995 moles of silicon = X atoms

Cross-multiplying, we have:

$X = 6.02 \times 10^{23} \times 3.4995\\\\X= 2.11 \times 10^{23} \;atoms$

Read more on atoms here: brainly.com/question/10614569

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2 years ago