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AnnyKZ [126]
3 years ago
10

6.(01.05 LC) Which states of matter change shape when moved?(2 points) Gases and solids Liquids and gases Liquids, solids, and g

ases Solids and liquids​
Chemistry
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:Gases and solids , Solids and liquids​

Explanation:

A solid has a definite shape while liquids and gases take the shape of the container in which they are found .

Hence when a substance changes it's state from gas to solid or solid to liquid, it's shape automatically changes as explained above.

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The cycling of carbon between the living and non-living parts of the Earth system is an important result of which of the followi
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b. Plants and animals exchanging gases with the atmosphere

Explanation:

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PLS HELP ASAP NO LINKS PLS<br> How does hydroelectric power operate?<br> oil<br> water<br> coal
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Water

Explanation:

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

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1. Displacement vectors of 10 m west and 14 m west make a resultant vector that is
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3 years ago
In the laboratory you dissolve 13.9 g of potassium phosphatein a volumetric flask and add water to a total volume of 250mL.
tensa zangetsu [6.8K]

Answer:

Molarity of the solution? 0,262 M.

Concentration of the potassium cation? 0,786 M.

Concentration of the phosphate anion? 0,262 M.

Explanation:

Potassium phosphate (K₃PO₄; 212,27 g/mol) dissolves in water thus:

K₃PO₄ → 3 K⁺ + PO₄³⁻ <em>(1)</em>

Molarity is an unit of chemical concentration given in moles of solute (K₃PO₄) per liters of solution.

There are 250 mL of solution≡0,25 L

The moles of K₃PO₄ are:

13,9 g of K₃PO₄ ×\frac{1mol}{212,27 g} = 0,0655 moles of K₃PO₄

The molarity of the solution is:

\frac{0,0655 moles}{0,25L} = 0,262 M

In (1) you can see that 1 mole of K₃PO₄ produces 3 moles of potassium cation. The moles of potassium cation are:

0,0655 moles×3 = 0,1965 moles

The concentration is:

\frac{0,1965 moles}{0,25L} = 0,786 M

The moles of K₃PO₄ are the same than moles of PO₄³⁻, thus, concentration of phosphate anion is the same than concentration of K₃PO₄. 0,262 M

I hope it helps!

4 0
3 years ago
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Answer:

Explanation:

In this case the answer would be

Water is a polar molecule with positive and negative side

Now since these negative and positives are present in the water molecule . In easy terms when a substance reacts with water .the negative part of water ( oxygen ) reacts with the positive part of the substance and the positive part of the water ( hydrogen) reacts with negative part of the substance .if you look at the reason . Water is held up by one of the strongest attraction forces available .since most substances have weaker attraction forces between them ,therefore water can easily overcome them with its forces. Thus giving it the ability to dissolve a variety of substances

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