0
How much CaCl2.6H2O and water must be weighed to prepare 100g of a solution that is 5 percent CaCl2?
Wiki User
∙ 11y ago
do you mean 100 ml? most solutions are given in terms of volume not mass. But ...
CaCl2 has a molar mass of 111 g The hydrated form also contains 108 g water. This gives a total mass of 219 g for the hydrated form.
The solution must contain: 100 g x 5% = 100 x 5/100 = 5g anhydrous CaCl2
5 / x = 111 / 219
solve for x: x = 5(219)/111 = 9.865 g of the hydrate
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How do one prepare 0.01M butanesulphonate?
To prepare a 0.01M solution of butanesulphonate, you would weigh out the appropriate amount of butanesulphonate compound needed to achieve a concentration of 0.01 moles per liter in a certain volume of solvent (usually water). You would dissolve the weighed compound in the solvent and then make up the final volume to reach the desired concentration. Finally, you would mix the solution thoroughly to ensure homogeneity.
What is one potential benefit of genome sequencing that can be weighed against possible negative effects?
Knowledge of your genome could help you prepare for, or even prevent, some diseases.
When you created salt water solution if you evaporate the water how many mg of salt would be left behind?
Exactly the same amount of salt as you weighed out to make the salt water solution in the first place.
How to make a project on comparative study on antacids?
To make a project on a comparative study of antacids, you can select different types of antacids available in the market, research their active ingredients, dosage forms, effectiveness in neutralizing stomach acid, side effects, and cost. Conduct experiments to compare their pH levels after interaction with acid, analyze the results, and draw conclusions on which antacids are most effective. Present your findings in a report highlighting the differences between the antacid products.
Can a solid be weighed?
Yes, a solid can be weighed on a scale. The weight of a solid is the force exerted by gravity on the object, which can be measured in units like grams or kilograms.
If someone weighed 200 pounds and lost 58 what percent did they lose?
29 percent
How do one prepare 0.01M butanesulphonate?
To prepare a 0.01M solution of butanesulphonate, you would weigh out the appropriate amount of butanesulphonate compound needed to achieve a concentration of 0.01 moles per liter in a certain volume of solvent (usually water). You would dissolve the weighed compound in the solvent and then make up the final volume to reach the desired concentration. Finally, you would mix the solution thoroughly to ensure homogeneity.
How can you determine the amount of salt presented in a saturated solution?
Only by experiments. For example the solution is heated, water is evaporated and the salt weighed.
How do you prepare 1N alcoholic koh solution?
To prepare a 1N alcoholic KOH solution, you will need to dissolve the appropriate amount of potassium hydroxide (KOH) pellets in a specific volume of anhydrous ethanol. First, calculate the molecular weight of KOH (39.10 g/mol) and then measure out the required weight to make a 1N solution. Once weighed, slowly add the KOH pellets into the anhydrous ethanol while stirring until fully dissolved. Check the final volume to ensure it reaches 1N concentration. Remember to handle KOH with care as it is caustic and generate heat when dissolving in ethanol.
What percent of your body weight did you lose if you weighed 190 and now weigh 160?
You weighed 190 and lost 30 so you now weigh 160. 30 divided by 190 = 0,157 so 16%
What is standard solution in titration?
A standard solution in titration is a solution of known concentration that is used to determine the concentration of another solution. It is typically a primary standard that can be accurately weighed and dissolved to make a solution of precise concentration. Standard solutions are essential in titration to accurately measure the volume of the solution being titrated and calculate its concentration.
What is one potential benefit of genome sequencing that can be weighed against possible negative effects?
Knowledge of your genome could help you prepare for, or even prevent, some diseases.
When you created salt water solution if you evaporate the water how many mg of salt would be left behind?
Exactly the same amount of salt as you weighed out to make the salt water solution in the first place.
When Joe graduated from high school he weighed 160 pounds. After college he weighed 192 pounds. What is the percent increase of his weight during college?
192/160 - 1 = 12/10 -1 = 1.2-1 = 0.2 = 20%
What percent of my body weight did i lose if weighed 205 and now weight 185?
1-185/205 = 0.0976 So you lost about 9.8%
How 1000 ppm solution of arsenic prepared from sodium arsenate?
To prepare a 1000 ppm solution of arsenic from sodium arsenate, weigh out an appropriate amount of sodium arsenate to achieve a concentration of 1000 ppm in the final solution. Dissolve this weighed amount of sodium arsenate in a known volume of solvent (such as water) to make the desired solution. It's important to handle sodium arsenate with care as it is toxic.
What is a sentence for weighed?
The vet weighed the dog.All the bags are weighed before they are checked in at the airport.
