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Kaylis [27]
3 years ago
7

Zero is the freezing temperature of water on which temperature scale?

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0
Zero is the freezing temperature of water on the Celsius scale.
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Which is longer DNA or chromosone
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Answer:

DNA

Explanation: Because if you stretch DNA it gets longer.

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8. What volume (ml) of a 5.45 M lead nitrate solution must be diluted to 820.7 ml to make a
Ganezh [65]

212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

Answer:

Option A.

Explanation:

Similar to Avagadro's law, there is another law termed as dilution law. As the product of volume and normality of the reactant is equal to the product of volume and normality of the product from the Avagadro's law. In dilution law, it will be as product of volume and concentration of the solute of the reactant is equal to the product of volume and concentration of solution.

C_{1} V_{1} =C_{2} V_{2}

So, as per the given question C1 = 5.45 M of lead nitrate and V1 has to be found. While C2 is 1.41 M of lead nitrate and V2 is 820.7 ml.

Then, (5.45*V_{1} ) = (820.7*1.41)

V_{1}=\frac{820.7*1.41}{5.45}=  212.33 ml

So nearly 212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

3 0
3 years ago
A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution
Deffense [45]

Answer:

Volume of solution = 5 L

Explanation:

Given data:

Molarity of solution = 0.02 M

Moles of solute = 0.1 mol

Volume of solution = ?

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Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

0.02 M = 0.1 mol / volume of solution

Volume of solution = 0.1 mol / 0.02 M

Volume of solution = 5 L

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2 years ago
The gas in a cylinder has a volume of 8 liters at a pressure of 101 kPa. The pressure of the gas is increased to 206 kPa. Assumi
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The pressure of the gas is increased<span> to 224 </span><span>kPa</span>
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A coin floats on the top of a glass of water. Explain why the coin is able to float on top of the water in this glass.
Goshia [24]

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The surface tension of the water

Explanation:

The surface of the water curves down twords the edge of the coin.

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3 years ago
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