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iris [78.8K]
3 years ago
15

I need help with this study island question thank u

Chemistry
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

The answer would be C. The reason being they're in different groups on the periodic table, so different reactivity.

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A 25. 0-ml sample of 0. 150 m hydrocyanic acid is titrated with a 0. 150 m naoh solution. What is the ph beforeany base is added
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The concentrated sulfuric acid we use in the laboratory is 98.0% sulfuric acid by weight. Calculate the molality and molarity of
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Answer : The molarity and molality of the solution is, 18.29 mole/L and 499.59 mole/Kg respectively.

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First we have to calculate the volume of solution.

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Now we have to calculate the molarity of solution.

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Now we have to calculate the molality of the solution.

Molality=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Mass of solvent}}=\frac{98.0g\times 1000}{98.079g/mole\times 2g}=499.59mole/Kg

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