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vlada-n [284]
3 years ago
12

The final solution had a volume of 1.0L and a molarity of 0.925. How many moles of Nickel (II) chloride were present in the solu

tion? Show your work.
Chemistry
1 answer:
Tanzania [10]3 years ago
7 0

Answer:

0.925 mole

Explanation:

From the question given, the following were obtained:

Volume = 1.0L

Molarity = 0.925 M

Number of mole of Nickel (II) chloride =?

Molarity is simply defined as the mole of solute per unit litre of the solution.

It is represented mathematically as:

Molarity = mole /Volume

With the above equation, we can easily find the mole of Nickel (II) chloride present in the solution as follow:

Molarity = mole /Volume

0.925 = mole / 1

Mole = 0.925 x 1

Mole of Nickel (II) chloride = 0.925 mole

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Aluminum metal reacts with aqueous iron(II) chloride to form aqueous aluminum chloride and iron metal. What is the stoichiometri
ryzh [129]

Answer:

<h2>2Al + FeCl²⇒2AlCl + Fe</h2>

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A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. what is its new molarity?
Aleksandr [31]

A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. Its new molarity will be 0.0216 m.

Dilution would be the process of lowering a solute's concentration in a solution. It usually just includes combining the solution with much more solvent, such as water. A solution is diluted when more solvent is added without increasing solute.

Molarity can be calculated by using the formula:

M_{1} V_{1} = M_{2} V_{2}

where, M is molarity and V is volume.

Given data:

M_{1} = 0.108 m

V_{1} = 50 ml

V_{2} = 250 ml

Put the value of given data in above equation.

0.108 m × 50 ml = M × 250ml

M = 0.0216 m

Therefore, the new molarity will be 0.0216 m.

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3 0
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How is a pure substance different from a mixture? A. pure substances cannot be seperated by physical means.
jeyben [28]

Answer: Pure substances cannot be separated by physical means.

Explanation:

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On the other hand, a mixture is a substance which contains two or more than two types of components and they can be separated by physical means as well.

Thus, option (a) is correct one that is pure substances cannot be separated by physical means.

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The atomic number is very important, as it indicates
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