Thursday

January 29, 2015

January 29, 2015

Posted by **Micheal** on Friday, November 8, 2013 at 9:32pm.

I'm not sure what the next step is really to find part b.

A. How would you prepare 250 mL of a 0.150 M solution of CoCl2 from solid CoCl2 and distilled water?

Dissolve 4.87 grams solid CoCl2 into enough water to make 250mL of solution using a volumetric flask.

b. Using the solution prepared in part a and distilled water, how would you prepare 100 mL of a 0.0600 M solution of CoCl2?

Measure mL of the 0.150 M CoCl2 solution using a volumetric pipet into a volumetric flask and add enough water to bring the solution level up to the line.

- Chem -
**bobpursley**, Friday, November 8, 2013 at 9:56pm.150 to .06 is diluting it 150/6 times, or 25 tims. diluting something 25 times means 1 part base solution, adding 24 parts water.

you want 250ml, so one part is 10ml

take one part (10ml) of .150M, add 240ml of water, stir, and label.

- Chem -
**DrBob222**, Friday, November 8, 2013 at 10:18pmI believe Mr. Pursley meant .150 to .06 is 15.0/6 = diluting 2.5 times. Just a typo.

**Answer this Question**

**Related Questions**

chem - I got through the first part easily, got -352.9kJ Having trouble with the...

calculus - The question I'm having problems with is If f(x)=3x^2+7x+2, find f'(4...

algebra :( help me!! - The table below shows the weekly earnings of two groups ...

Math !!!!!!!! - Ok i have a Summer Math Assignment & i really need help on this...

Derivatives - Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought ...

physics - A 9.3 kg firework is launched straight up and at its maximum height 45...

intro to physics - an athlete executing a long jump leaves the ground at a 28 ...

physics - A 9.3 kg firework is launched straight up and at its maximum height 45...

Physics - I had a two part question in which I'm fairly sure I did the first ...

ALG 2 PLZ PLZ HELP - As you can see, the biker and his friend are having a hard ...