The concentration of NaCl in sea water is about 35 g per kg. The density of seawater is about 1.025 kg/l, so you would need 50 * 1.025 kg sea water for 50 liters of solution.
NaCl contributes to this with 35 * 1.025 * 50 g / kg * kg / l * l. consequently the result is about 1794 g of NaCl.
In order to prepare 500 ppm of lead solution from lead nitrate dissolve 0.799 gm of lead nitrate in 1000ml of water--add 1 or 2 drops of nitric acid.
DDT is not soluble in water.
You prepare a primary solution then dilute portion of your solution down to the required concentration. For example, you want a 10 ppm salt solution (10 mg/L), you dilute 1 g of salt in 1 L of water you get 1000 ppm salt solution. You take 10 ml of your salt solution (0.01 g salt in 10 g) and add in additional 980 ml of water then you get a 10 ppm weight solution.
To prepare a dilute solution.
Image result for You prepare a less concentrated H C l solution from a stock solution with 12m concentration. If you too 100g of the stock solution to prepare 4 MHCl solution how much water is needed to prepare o find solution 9density HCL(12) = 1,89/ml? The concentration would be 0.76 mol/L.
cresol is prepared with soap solution as it is more soluble in the soap solution than water . moreover soap solution enhances its detergent and disinfectant properties.
It depends on the final solution Volume you want to prepare. For 100ml of a 6M NaCL solution, you add 35.1g of NaCl to water until you reach 100ml. Dissolve and autoclave for 15 mins.
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1 % DCPIP solution can be prepared by dissolving 1g of the dye in 100cm3 of water
take 276 gm of salicylic acid in 1000 ml water to prepare 2M solution of the salicylic acid.
Dissolve 566.25g of KCl in 3L.
8.9g