# Chemistry

how many grams of CaCl2 would be required to be added to water to prepare 1 liter (1000 ml) of a 1.72% (w/v) aqueous solution of CaCl2?

1. 👍
2. 👎
3. 👁
1. 1.72% w/v means 1.72 g CaCl2 in 100 mL of solution so that would be 10x that for 1 L of solution or 17.2 g CaCl2. The answer to the problem, therefore, is 17.2 g CaCl2 but it makes a difference how the solution is prepared. You can NOT add 17.2 g CaCl2 to a liter (1000 mL) of water because that will be more than 1000 mL OF SOLUTION. You prepare it correctly by adding 17.2 g CaCl2 to a 1000 mL volumetric flask, adding some water, swirl until all of the CaCl2 is dissolved, then make the final volume to 1000 mL (by adding water to the mark on the flask).

1. 👍
2. 👎

## Similar Questions

1. ### Chemistry

A 0.879 g sample of a CaCl2 ∙ 2 H2O / K2C2O4 ∙ H2O solid salt mixture is dissolved in 150 mL of deionized water. A precipitate forms which is then filtered and dried. The mass of this precipitate is 0.284 g. The limiting

2. ### chemistry

How many grams of CaCl2 would be dissolved in 1.1 L of a 0.17 M solution of CaCl2?

3. ### Chemistry

A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 5.0 mL of a 5.0 % (m/v) CaCl2 solution, how many grams of CaCl2 were given?

4. ### chemistry

How many grams of calcium carbonate are required to prepare 50.0 grams of calcium oxide? CaCO3-> CaO + CO2

1. ### Chemistry

How mush CaCl2, in grams, is needed to make 2.0 L of a 3.5M solution? g CaCl2 = (2.0L) *( 3.5 mol Cl-/1L) * (1mol CaCl2/ 2mol Cl-) *( 110.98 g CaCl2/ 1 mol CaCl2) = 5.549 g CaCl2 i don't think i did any of this right

2. ### Chemistry

OMG! HELP! 1. How many grams of CaCl2 would be required to produce a 3.5 M (molar) solution with a volume of 2.0 L?

3. ### chemistry

Find the molar masses of the following compounds: 1. LiI 2. PbCO4 3. Mg(OH)2 4. (NH4)3PO4 Find the percent composition (percent by mass) of the given element in the following compounds: 1. Fluorine in AgF 2. Hydrogen in glucose

4. ### chem

How many grams of CaCl2 (molar mass = 111.0 g/mol) are needed to prepare 4.44 L of 0.500 M CaCl2 solution?

1. ### Chemistry

How would you prepare 455 g of aqueous solution that is 6.50% sodium sulfate Na2SO4 by mass? percent by mass = grams/100 g solution. X grams/455 = 0.065 solve for X. Subtract 455-X to calculate how much water must be added. ok i

2. ### science

if 8.100 grams of C6H6 is burned and heat is produced from the burning is added to 5691 grams of water at 21 degrees celsius what is the final temp of the water? 2C6H6+15O2=12CO2+6H2O+6524kj

3. ### Chemistry

How many grams of CaCl2 would be required to produce a 3.5M(molar) solution with a volume of 2.0L?

4. ### chemistry

how many grams of 5%NaNO3 will be required to prepare 250ml solution