Question

1. Isopropyl alcohol is mixed with water to produce a 35.0% (v/v) alcohol solution. How many...

1. Isopropyl alcohol is mixed with water to produce a 35.0% (v/v) alcohol solution. How many milliliters of each component are present in 745 mL of this solution? (Assume that volumes are additive.)

1A- _____ mL alcohol

1B-_____ mL water

2. Calculate the volume percent of solute in the following solutions.

2A- 16.9 mL of methyl alcohol in enough water to give 547 mL of solution. _____%

2B- 68.1 mL of ethylene glycol in enough water to give 229 mL of solution _____ %

3. How many grams of chlorine gas are needed to make 3.30 * 10^6 g of a solution that is 1.30 ppm chlorine by mass?

3A- _____ g Cl2

4. Calculate the molarity of the following solutions

4A- 0.550 mol of Na2S in 1.20 L of solution _____ M

4B- 32.3 g of MgS in 743 ml of solution _____ M

5. Calculate the molarity of the following solutions

5A- 0.300 mol of NaOH in 2.75 L of solution _____ M

5B- 20.5 g of NaCi in 849 mL of solution _____ M

6. How many moles of NaOH are present in 17.0 mL of 0.240 M NaOH?

6A- _____ mol

7. If 5.97g of CuNO3 is dissolved in water to make a 0.870 M solution what is the volume of the solution?

7A- _____ mL

8. How many grams of solute are present in 625 mL of 0.830 M KBr?

8A- _____ g

9- Assuming equal concenrations and complete dissociation rank these aqueous solutions by their freezing points. Starting with highest to lowest freezing points. NaNO3 CoBr3 K2CO3

9A-

Homework Answers

Answer #1

1) Given that 35% of the solution is water so you just multiply the whole solution (865mL) by 35% (0.35) to get the amount of alcohol and you know that there is 65%

0.35 x 865mL = 302.75mL of Isopropyl alcohol
0.65 x 865mL = 562.25mL of water.

4)

A) 0.550 moles Na2S/1.20 L= 0.45 M

B) 1 mole of MgS = 24.3 + 32.1 = 56.4 g

32.3 g MgS x 1 mol / 56.4 g = 0.5726 mol

M = 0.5726 mol / 0.743 L = 0.770 mol/L

5)

A) (0.300 mol) / (2.75 L) = 0.109 mol/L

B) ((20.5 g NaCl) / (58.4430 g NaCl/mol)) / (0.849 L) = 0.413 mol/L

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A solution of rubbing alcohol is 79.3 % (v/v) isopropanol in water. How many milliliters of...
A solution of rubbing alcohol is 79.3 % (v/v) isopropanol in water. How many milliliters of isopropanol are in a 79.0  mL sample of the rubbing alcohol solution? How many liters of a 3.90  M K2SO4 solution are needed to provide 90.8  g of K2SO4 (molar mass 174.01 g/mol)? Recall that M is equivalent to mol/L.
3. In a saturated solution of the ionic compound sodium sulfate, Na3PO4 all of the water...
3. In a saturated solution of the ionic compound sodium sulfate, Na3PO4 all of the water molecules are involved in the hydration process. some solid Na3PO4 is present. all of the above the concentration of Na+ is three times the concentration of PO43-. 4. A solution contains 85 grams sucrose and 100. grams of water. What is the mass percent of the sucrose solution? 5. A solution contains only glycerol and fructose. There is ten times as much glycerol as...
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0 mL of...
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2 solution? ________ ml (b) How many milliliters of 2.50 M H2SO4 are needed to neutralize 50.0 g of NaOH? _________ mL (c) If 56.8 mL of BaCl2 solution is needed to precipitate all the sulfate in a 544 mg sample of Na2SO4 (forming BaSO4), what is the molarity of the solution? _________M (d) If 47.5 mL of 0.250 M HCl solution...
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0 mL of...
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2 solution? ______ml (b) How many milliliters of 3.50 M H2SO4 are needed to neutralize 75.0 g of NaOH? _______mL (c) If 55.8 mL of BaCl2 solution is needed to precipitate all the sulfate in a 544 mg sample of Na2SO4 (forming BaSO4), what is the molarity of the solution? ________M (d) If 47.5 mL of 0.375 M HCl solution is needed...
(a) Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water...
(a) Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 650 mL of solution.     Answer- Answer with correct sig figs- (b) How many moles of KMnO4 are present in 25.0 mL of a 0.0950 M solution? Answer- Answer with correct sig figs- (c) How many milliliters of 12.6 M HCl solution are needed to obtain 0.205 mol of HCl? Answer- Answer with correct sig figs-
(a) Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water...
(a) Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution. Give the answer again with the correct amount of significant figures. (b) How many moles of KMnO4 are present in 50.0 mL of a 0.0850 M solution? Give the answer again with the correct amount of significant figures. (c) How many milliliters of 11.6 M HCl solution are needed to obtain 0.205 mol of HCl? Give the answer...
You have 47.0 mL of a 0.500 M stock solution that must be diluted to 0.100...
You have 47.0 mL of a 0.500 M stock solution that must be diluted to 0.100 m. Assuming the volumes are additive, How much water should you add? (a) 1.How many grams of CaCl2 are needed to make 866.0 g of a solution that is 39.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). (a)2. How many grams of water are needed to make...
1. How many grams of K2SO4 and how many grams of water are rwquired to make...
1. How many grams of K2SO4 and how many grams of water are rwquired to make 250.0g of a 0.2000 m solution? (Hint: First find m/m% K2SO4 in a 0.2000 m solution) 2. What is the mole fraction of K2SO4 in an 8.60% (m/v) aqueous solution of K2SO4? 3. If drinking water contains 1 ppm of fluoride, what is the molarity of F- in the water? How many grams of NaF would be required for a day's worth of water...
Part A Calculate the molarity of a solution prepared by dissolving 12.9 g of Na2CrO4 in...
Part A Calculate the molarity of a solution prepared by dissolving 12.9 g of Na2CrO4 in enough water to produce a solution with a volume of 670. mL . Express the molarity to three significant digits Part B How many moles of KBr are present in 160. mL of a 0.127 M solution? Express the amount in moles to three significant digits Part C How many milliliters of 6.7 M HCl solution are needed to obtain 0.19 mol of HCl?...
Calculate how many milliliters of 1 M NaOH will be needed to make 1 L of...
Calculate how many milliliters of 1 M NaOH will be needed to make 1 L of 0.1 M solution. Calculate how many grams of potassium acid phthalate (KHP, FW = 204.2 g/mol) will react with about 25 ml of the 0.1 M NaOH solution. The reaction is as follows: HKC8H4O4 + NaOH → H2O + NaKC8H4O4 Calculate how many mL of 1 M HCl is needed to make 1 L of 0.2 M HCl. HCl + NaOH → H2O +...