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4 years ago

How many quarters are in $500

Chemistry

1 answer:

Alexandra [31]4 years ago

8 0

Answer:

$\boxed{2000}$

Explanation:

$\text{4 quarters = \$1}\\\\\text{No. of quarters} = \text{\$500} \times \dfrac{\text{4 quarters}}{\text{\$1}} = \boxed{\textbf{2000 quarters}}$

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Explanation:

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3 years ago

A balloon is filled with air. It has a volume of 720 mL at a temperature of 22°C. You put

liubo4ka [24]

Charles's Law.

V1  = V2

T1 T2

V1 = 720 mL

T1 = 22°C

T2 = 106°C

V2 = ?

then,

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2 years ago

You perform recrystallization of 1 g of impure acetanilide from water. The solubility of pure acetanilide in hot water is 55g/L.

likoan [24]

Answer:

38.32 mL is minimal volume of hot water that is needed to dissolve 2.1 g of pure acetanilide.

Explanation:

Mass of acetanilide to be dissolved in hot water = 2.1 g

Mass of hot water to be used = m

Solubility of acetanilide = 55 g/L

This means that 55 grams of acetanilide dissolves in 1 L of hot water.

Then 1 grams of acetanilide will dissolve in :

$\frac{1}{55}\times 2.1 L=0.0382 L$

0.0382 L = 0.0382 × 1000 mL =38.2 mL

1 L = 1000 mL

38.32 mL is minimal volume of hot water that is needed to dissolve 2.1 g of pure acetanilide.

8 0

3 years ago

If I have 5.275 moles of gas at a temperature of 575 K and a pressure of 7.75 atmospheres, what is the volume of the gas?

elena55 [62]

Answer:

Explanation:

4 0

3 years ago

Calculate the volume in milliliters of a 2.09 M silver nitrate solution that contains 400 g of silver nitrate AgNO3. Round your

Liula [17]

Answer: The volume of solution is 1.13 L

Explanation:

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

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

We are given:

Molarity of solution = 2.09 M

Given mass of silver nitrate = 400. g

Molar mass of silver nitrate = 170 g/mol

Putting values in above equation, we get:

$2.09M=\frac{400}{170\times \text{Volume of solution}}\\\\\text{Volume of solution}=\frac{400}{170\times 2.09}=1.13L$

Hence, the volume of solution is 1.13 L

4 0

3 years ago

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