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Marina CMI [18]
3 years ago
6

Which best explains how heat plays a role in the movement of materials within Earth's interior?

Chemistry
2 answers:
vfiekz [6]3 years ago
3 0

Answer:

Hot material near the core is less dense and rises, when it cools, it becomes more dense and sinks.

Explanation:

This best explains how heat plays a role in the movement of materials within Earth's interior because it's how convection works. Convection is the circular motion that happens when warmer air or liquid which has faster moving molecules, making it less dense rises, while the cooler air or liquid drops down. Convection currents within the earth move layers of magma, and convection in the ocean creates currents.

Fed [463]3 years ago
3 0

Answer:

Hot material near the core is less dense and rises, when it cools, it becomes more dense and sinks

Explanation:

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Draw a schematic diagram of a circuit with an output device, a energy source and a controller.
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Answer:

ch∪pαpi munαn0?

Explanation:

8 0
3 years ago
Why did Rutherford choose alpha particles in his experiment?
Georgia [21]
Rutherford used gold for his scattering experiment because gold is the most malleable metal and he wanted the thinnest layer as possible. The goldsheet used was around 1000 atoms thick. Therefore, Rutherford selected a Gold foil in his alpha scatttering experiment.
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Using the model of the Periodic Table, which two elements pictured have similar chemical properties?
liberstina [14]

Answer:

C) 1 and 3

Explanation:

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5 0
3 years ago
6. A 25.0-mL sample of potassium chloride solution was found to have a mass of 25.225 g.
Morgarella [4.7K]

Answer:

6. a. 5.53 (m/m) %; b. 0.7490M

7. 0.156M

Explanation:

6. In the solution of KCl, there are 1.396g of KCl in 25.225g of solution. As mass/mass percent is:

Mass solute / Mass solution * 100

The mass/mass percent of KCl is:

a. 1.396g KCl / 25.225g solution * 100

5.53 (m/m) %

b. Molarity is moles of solute per liters of solution:

<em>Moles KCl -Molar mass: 74.55g/mol-:</em>

1.396g KCl * (1mol / 74.55g) = 0.018726 moles KCl

<em>Volume in liters: 25mL = 0.025L</em>

Molarity:

0.018726 moles KCl / 0.025L = 0.7490M

7. 0.90% means 0.90g of NaCl in 100g of solution:

<em>Moles NaCl -Molar mass: 58.44g/mol-:</em>

0.90g NaCl * (1mol / 58.44g) = 0.0154 moles NaCl

<em>Volume in Liters:</em>

100g * (1mL / 1.01g) = 99mL = 0.099L

Molarity:

0.0154 moles NaCl / 0.099L =

0.156M

4 0
2 years ago
if an atom has a mass number of 226 and an atomic number of 88. how many protons and neutrons does it have​
aleksandrvk [35]
There is 138. Protons and neurons
3 0
3 years ago
Read 2 more answers
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