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Masteriza [31]
3 years ago
7

HELP ASAP!!!!!

Chemistry
1 answer:
OleMash [197]3 years ago
8 0
My answer is 3.0g/cm^3
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A solution prepared by mixing 10 ml of 1 m hcl and 10 ml of 1.2 m naoh has a ph of
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Answer: pH of resulting solution will be 13

Explanation:

pH is the measure of acidity or alkalinity of a solution.

Moles of H^+ ion = Molarity\times {\text {Volume in L}}=1M\times 0.01L=0.01mol

Moles of OH^- ion = Molarity\times {\text {Volume in L}}=1.2M\times 0.01L=0.012mol

HCl+NaOH\rightarrow NaCl+H_2O

For neutralization:

1 mole of H^+ ion will react with 1 mole of OH^- ion

0.01 mol of H^+  ion will react with =\frac{1}{1}\times 0.01mole of OH^- ion

Thus (0.012-0.01)= 0.002 moles of OH^- are left in 20 ml or 0.02 L of solution.

[OH^-]=\frac{0.002}{0.02L}=0.1M

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Thus the pH of resulting solution will be 13

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3 years ago
There is a 50 g sample of ra-229. It has a half-life of 4 minutes.how much will be left after 12 minutes? a. 3.13 g b. 6.25 g c.
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It's B. 6.25

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then divide 25/2

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Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pr
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When an ionic compound dissolves in water: When an ionic compound dissolves in water: the solvent-solute attractive forces overc
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3 years ago
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