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grin007 [14]
2 years ago
11

What is the molarity of 1. 5 liters of an aqueous solution that contains 52 grams of lithium fluoride.

Chemistry
1 answer:
Cerrena [4.2K]2 years ago
8 0

Answer:

1.3 M

Explanation:

The formula mass of lithium fluoride is 7+19=26 g/mol. This means that in 52 grams of LiF, there is 2 moles.

Molarity = (moles of solute)/(liters of solution), so the answer is 2/1.5 = <u>1</u><u>.</u><u>3</u><u> </u><u>M</u>

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Based on the article, how would you define a heat sink?
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The coldest temperature ever recorded on Earth was -128.6°F (recorded at Vostok Station, Antarctica, on July 21, 1983). Express
Sever21 [200]

Answer : The correct option is, -89.2^oF\text{ and }183.9K

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

^oC=(^oF-32)\times \frac{5}{9}

where,

^oF = temperature in Fahrenheit

^oC = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

K=273.15+^oC

where,

K = temperature in Kelvin

^oC = temperature in centigrade

As we are given the temperature in Fahrenheit is, -10

Now we have to determine the temperature in degree Celsius.

^oC=(^oF-32)\times \frac{5}{9}

^oC=(-128.6^oF-32)\times \frac{5}{9}

^oC=-89.2

Now we have to determine the temperature in Kelvin.

K=273.15+^oC

K=273.15+(-89.2^oC)

K=183.9

Therefore, the temperature in degree Celsius and Kelvin are, -89.2^oF\text{ and }183.9K

7 0
3 years ago
All changes saved
Kipish [7]

Answer:

4.00L

Explanation:

Using Charle's law, which have the following equation:

V1/T1 = V2/T2

Where;

V1 = initial volume (litres)

T1 = initial temperature (Kelvin)

V2 = final volume (litres)

T2 = final temperature (Kelvin)

According to the information provided, T1 = 275K, T2 = 400K, V1 = ?, V2 = 5.82L

Hence, using the formula;

V1/275 = 5.82/400

400 × V1 = 275 × 5.82

400V1 = 1600.5

V1 = 1600.5 ÷ 400

V1 = 4.001

Therefore, volume of the gas before it is heated is 4.00L

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3 years ago
What is the concentration of Sr2+ in a saturated solution of SrSO4? SrSO4 has a Ksp of 3.2 x 10–7.
Rudik [331]
<span>The answer is 5.7 x 10–4 M.

</span><span>
</span>
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