A solution is prepared by mixing 25 mL (0.22 mol, 16 g) of pentane (the solute)...
A solution is prepared by mixing 25 mL (0.22 mol, 16 g) of
pentane (the solute) with 45 mL (0.34 mol, 30 g) of hexane (the
solvent). Assuming that the volumes add on mixing, answer questions
35-36 below.
(35) What is the molarity of the pentane?
[1] 3.1 mol/kg [2] 3.1 mol/L [3] 7.3 mol/kg [4] 7.3 mol/L [5] 45.8
mol/L
(36) 25.00 cm3 of a 0.7892 mol.dm-3 solution of potassium hydroxide
is transferred to an empty 350.00 cm3 volumetric flask. This flask
is made up to the mark with distilled water and then shaken well.
The concentration of the potassium hydroxide in this second flask
is:
[1] 0.05637 mol.dm-3 [2] 0.01109 mol.dm-3 [3] 0.7892 mol.dm-3 [4]
17.74 mol.dm-3 [5] None of the above.
Homework Answers
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A solution is prepared by mixing 25 mL (0.22 mol, 16 g) of
pentane (the solute)...
7. A solution is prepared by mixing 25 mL pentane (CsH12, d 0.63 g/mL) with 45...
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Can you please answer all my questions please. I really need the answers to all the...
Can you please answer all my questions please. I
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Can you please answer all my questions please. I
really need the answers to all the questions please
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