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4 years ago

What amounts do you compare when measuring concentration

Chemistry

1 answer:

ozzi4 years ago

7 0

Answer:

<em>When measuring concentration you compare </em><u>the amount of solute to the amount of solvent or solution.</u>

Explanation:

The <em>concentration</em> is a measure of how much solute is present in certain amount of solvent or solution. There are many quantitative expressions for the concentration. Some of those expressions are: percentage, molarity, molality, molar fraction, among others.

This table shows the expressions for some concentration measures, showing the amounts compared.

<u>Concentration</u> <u>amounts compared in form of ratio</u>

Percentage, mass/mass (mass of solute / mass of solution) × 100

Percentage, vol./vol. (vol. of solue / vol. of solution) × 100

Molarity (moles of solute / liters of solution)

Molality (moles of solute / Kg of solvent)

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maksim [4K]

Answer:

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Explanation:

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2 years ago

Balance this chemical formula<br> Fe + Cl2 = FeCl3

san4es73 [151]

First you find out how much each element has

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now we multiply each so we can balance each side.

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3 years ago

Read 2 more answers

Calculate the number of moles in the following: 2.8 X 10^24 atoms of Cl2

vova2212 [387]

Answer:

<h3>The answer is 4.65 moles</h3>

Explanation:

To find the number of moles given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2.8 × 10²⁴ atoms of Cl2

So we have

$n = \frac{2.8 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 4.65116279069...$

We have the final answer as

<h3>4.65 moles</h3>

Hope this helps you

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3 years ago

Classify each process by its individual effect on the entropy of the universe, s. hydrogen peroxide slowly decomposing into wate

Jobisdone [24]

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3 years ago

A new element (solid at room temperature) is discovered that has:

gtnhenbr [62]

Answer:

A metalloid is a substance that has both the qualities of a metal and a non metal. Metals conduct electricity and have a high melting point.The element described does not conduct electricity until temperatures are reduced therefore it is not a metal. The fact that conduction occurs when temperatures are reduced means that it is not a non metal because non metals do not conduct electricity at all. Therefore the element is a metaloid because it exhibits some properties of a metal and others of a non mental.

Explanation:

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3 years ago