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tatiyna
3 years ago
15

Calculate the concentration of an aqueous solution of naoh that has a ph of 11.98.

Chemistry
1 answer:
Vaselesa [24]3 years ago
5 0

0.001 mol/L. The concentration of an aqueous solution of NaOH with a pH

of 11 is 0.001 mol/L

<em>Step 1.</em> Calculate the pOH of the solution

pOH = 14.00 – pH = 14.00 -11 = 3

<em>Step 2</em>. Calculate the concentration of NaOH

[NaOH] = [OH^(-)] = 10^(-pOH) mol/L = 10^(-3) mol/L = 0.001 mol/L

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3 years ago
A student obtains a 10.0g sample of a white powder labeled as BaCl2. After completely dissolving the powder in 50.0mL of distill
Mamont248 [21]

Answer:

<em>(B.) What is the molar solubility of barium chloride, BaCl2 in water? </em>

Explanation:

Molar solubility is the number of moles of a substance that can dissolve in a liter of solution to the point of the solution's saturation. It can be calculated stoichiometrically from a substance's solubility product constant in mol/L.

Since all the BaCl_{2} reacted all the Na_{2} SO_{4} from the information, we can easily assume all the substances were consumed in the reaction, and hence account for their purity. Furthermore, BaSO_{4} is insoluble in water, the most probable scientific query would be the molar solubility of the BaCl_{2} used in the experiment.

3 0
4 years ago
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Remember to use the proper number of significant figures and leading zeros in all calculations. A sample has a mass of 35.4 g an
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Answer : The correct option is, 0.961 g/ml

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Volume of sample = 36.82 ml

Formula used :

\text{Density of sample}=\frac{\text{Mass of sample}}{\text{Volume of sample}}

Now put all the given values in this formula, we get the density of the sample.

\text{Density of sample}=\frac{35.4g}{36.82ml}=0.961g/ml

Therefore, the density of the sample is, 0.961 g/ml

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The nuclide Rn-204 is the daughter nuclide resulting from the α decay of what
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Answer:

Explanation:

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7 0
3 years ago
A reaction begins with 130.5g of substance X and substance Y. How many grams of
Paha777 [63]

Answer:

130.5g

Explanation:

At the of the reaction, the combined mass of X and Y will be 130.5g.

The premise for this conclusion is based on the law of conservation of matter.

This law states that "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".

In essence, in a chemical reaction, there is no mass loss.

  • The amount of product in the reaction is expected to be the same as the amount of reactants used in the experiment.
  • When we start with 130.5g then we should end with 130.5g
7 0
3 years ago
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