due May 20 at 9:59pm This is a graded discussion: 5 points possible Unit 3: Molarity and Solution Calculations Describe two products in your house that list chemicals as percent concentrations. What are the chemicals? After you have responded to the topic above, picka combination of one of the following molecules, one mass nuantity, and one total solution volume from this table. Molecule Mass Volume 150 ml NaC CaBr2 Li3N 2 g 6 g 1 g 7 g 3 L 500 m cao 14 L For example, one possible combination would be 2 grams of NaCI in 500 ml of solution. Then, give each of the following for your unique combination being sure to show all of your work 1, %mass/volume concentration 2. Molarity O 3. Osmolarity Top Please see the section Osmolarity in weekly lesson to help you in this topic.
Solution
toilet cleaner solution: HCl 9.8% w/v
Dettol antiseptic liquid: Chloroxylenol 4.8% w/v, Terpineol 9.0% w/v, Alcohol(denatured) eq to absolute alcohol 13.1% w/v
NaCl 6 g 3L
1) molarity: (6g/58.4)/3=0.03M
% mass/volume=6g/3000ml *100=0.2%m/v
osmolarity: no of osmoles = 2( Na+ and Cl-)
hence osmolarity= no of osmoles x molarity = 2 x 0.03=0.06 Osmol/L
2) CaBr2 7g 14 L
molarity=(7/200)/14=0.0025M
m/v = 7/14000x100=0.05%
osmolarity=0.0025 x 3=0.0075 Osm/L
3)Li3N 2g 500 ml
molarity=(2/34.8)/0.5=0.1149M
m/v = 2/500x100=0.4%
osmolarity=0.1149 x 4=0.4596 Osm/L
4)CaO 1g 150 ml
molarity=(1/56.07)/0.15=0.12M
m/v = 1/150x100=0.67%
osmolarity=0.12 x 2=0.24 Osm/L
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due May 20 at 9-59pm This is a graded discussion- 5 points possible Un.docx
1. due May 20 at 9:59pm This is a graded discussion: 5 points possible Unit 3: Molarity and
Solution Calculations Describe two products in your house that list chemicals as percent
concentrations. What are the chemicals? After you have responded to the topic above, picka
combination of one of the following molecules, one mass nuantity, and one total solution volume
from this table. Molecule Mass Volume 150 ml NaC CaBr2 Li3N 2 g 6 g 1 g 7 g 3 L 500 m cao
14 L For example, one possible combination would be 2 grams of NaCI in 500 ml of solution.
Then, give each of the following for your unique combination being sure to show all of your
work 1, %mass/volume concentration 2. Molarity O 3. Osmolarity Top Please see the section
Osmolarity in weekly lesson to help you in this topic.
Solution
toilet cleaner solution: HCl 9.8% w/v
Dettol antiseptic liquid: Chloroxylenol 4.8% w/v, Terpineol 9.0% w/v, Alcohol(denatured) eq to
absolute alcohol 13.1% w/v
NaCl 6 g 3L
1) molarity: (6g/58.4)/3=0.03M
% mass/volume=6g/3000ml *100=0.2%m/v
osmolarity: no of osmoles = 2( Na+ and Cl-)
hence osmolarity= no of osmoles x molarity = 2 x 0.03=0.06 Osmol/L
2) CaBr2 7g 14 L
molarity=(7/200)/14=0.0025M
m/v = 7/14000x100=0.05%
osmolarity=0.0025 x 3=0.0075 Osm/L
3)Li3N 2g 500 ml
