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notka56 [123]
3 years ago
5

Can an element be separated into simpler materials

Chemistry
1 answer:
Aleksandr-060686 [28]3 years ago
6 0
Yes..... I think.........
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What is the concentration of a solution that has 15.0 g NaCl dissolved to a total of 750 ml?
Oksana_A [137]

<u>Answer:</u> The concentration of solution is 0.342 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Mass of solute (Sodium chloride) = 15 g

Molar mass of sodium chloride = 58.5 g/mol

Volume of solution = 750 mL

Putting values in above equation, we get:

\text{Molarity of solution}=\frac{15g\times 1000}{58.5g/mol\times 750mL}\\\\\text{Molarity of solution}=0.342M

Hence, the concentration of solution is 0.342 M

6 0
3 years ago
When energy is transferred from the air to the water, what happens to most of the energy? A. It travels through the water. B. It
BigorU [14]

Answer: Option (A) is the correct answer.

Explanation:

When energy is transferred from the air to the water then energy is absorbed by the water molecules.

This energy travels through one molecule of water to another molecule of water by the process of convection.

Thus, we can conclude that when energy is transferred from the air to the water, then it travels through the water.

3 0
3 years ago
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3. The scientific study of how organisms are classified is called _____.
Vilka [71]
Hey mate!

Taxonomy is the <span>study of classification of organisms. Therefore, your answer is A.

Hope this helps!</span>
3 0
3 years ago
Which electromagnet would have the most strength?
ycow [4]
The one with 20 coils as it can generate more electricity. 
8 0
3 years ago
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Match these items
masha68 [24]
The correct matches are as follows:

<span>1.instantaneous combustion 
</span>G.burning<span>

2.mass of substances before and after a reaction is the same
</span>C.Law of Conservation of Matter<span>

3.substances that combine
</span>A.reactants
<span>
4. Yields or makes
</span>B.arrow symbol 
<span>
5.rapid oxidation
</span>F.explosion<span>

6.new substance
</span>D.product
<span>
7.slow oxidation
</span>E.rust
<span>
Hope this answers the question. Have a nice day.

</span>
4 0
3 years ago
Read 2 more answers
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