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Anuta_ua [19.1K]
2 years ago
13

Calculate the molarity of each of the following

Chemistry
1 answer:
Alenkasestr [34]2 years ago
8 0

Answer:

a. 1.21M

b. 0.119M

c. 0.00496M

Explanation:

Molarity, M, is an unit of concentration defined as the ratio between moles of solute and liters of solution:

a. 4.35 mol LiCl / 3.60L = 1.21M

b. 29.43gC6H12O6 * (1mol / 180.16g) = 0.1634moles / 1.37L = 0.119M

<em>Molar mass C6H12O6: 180.16g/mol</em>

c. 34.5mg NaCl = 0.0345g * (1mol / 58.44g) = 5.9x10⁻⁴moles / 0.1191L = 0.00496M

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A compound is analyzed and found to contain 22.10%Al, 25.40%P, and 52.50%O. What is the empirical formula of the compound?
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A compound is analyzed and found to contain 22.10%Al, 25.40%P, and 52.50%O

Let the total mass of compound = 100g

The mass of Aluminum = 22.10 g

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The mass of P = 25.40 g

Moles of P = 25.40 / 31 = 0.819

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Moles of oxygen = 52.50 / 16= 3.28

The mole ratio of the two elements will be

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The whole number ratio will be 1 : 1 : 4

So formula will be AlPO4


5 0
3 years ago
What heats up faster but loses heat faster?<br><br><br> -Water<br> -Air<br> Or<br> Land
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The answer is land because land absorbs heat more quickly but it also loses heat more quickly. And it is not water because water is a low conductor of heat and water has to lose more energy in order for the temperature to decrease. And air could not be the answer.
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2 years ago
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