2 years ago

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Chemistry

2 answers:

svlad2 [7]2 years ago

6 0

Answer:

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Marta_Voda [28]2 years ago

5 0

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When 80 g of sodium hydroxide, naoh, are dissolved in enough water to make 500 ml of solution, the molarity of the solution is?

Y_Kistochka [10]

What is the molarity of a solution that contains 80.0 grams of NaOH dissolved in 500 mL of solution? Student prepares a solution by dissolving 3.72 g of NaOH in enough water to make 300.

3 0

3 years ago

Why is a solution that is 0.10M HCN and 0.10M LiCN considered a good buffer system?

const2013 [10]

Because of the common ion effect. Adding a common ion decreases the solubility of the salt which is the intention of a buffer.

8 0

3 years ago

Calculate the volume of 4.00 molar NaOH solution required to prepare 100 mL of a 0.500 molar solution of NaOH.

Kazeer [188]

Answer:

The answer to your question is V₁ = 12.5 ml

Explanation:

Data

Volume = V₁?

[NaOH] = C₁ = 4.0 M

Volume 2 = V₂ = 100 ml

[NaOH] = C₂ = 0.5 M

Formula of dilution

V₁C₁ = V₂C₂

Solve for V₁ (original solution)

V₁ = $\frac{V2C2}{C1}$

Substitution

V₁ = $\frac{(0.5)(100)}{4}$

Simplification

V₁ = $\frac{50}{4}$

Result

V₁ = 12.5 ml

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2 years ago

Which is an example of a heterogeneous mixture? <br>A coffee<br>B soil<br>C gelatin<br>D air

mariarad [96]

Heterogeneous mixtures are made of different substances that remain physically seperate. An example would be mixing sand and sugar together.
the answer would be soil
The answer is B soil

6 0

3 years ago

A chemist set up a synthesis of phosphorus trichloride by reacting 12.0 grams of phosphorus with 35.0 grams of Cl2. 42.4 grams o

babunello [35]

Answer:

sorry i do not know

Explanation:

i do not know the answer you are asking sorry i was never really good in maths anyway

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3 years ago