350grams
Seawater has a salinity of arround 3.5 percent. 1 liter is 1000 cubic centimeters needs 35 gram of salt so get this solution.
About 80ml of water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution.
About 80ml of water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution.
100ppm means, you need 100mg in 1oooml. Thus, for 100ml solution, you will need 10mg of methanol to make 100ppm solution.
Add 0,8 L of water.
98 mL
It dosent matter. It dosent matter.
to make 500ml of 1x TAE solution we have to take 5ml of 100x TAE solution. mix it in 495 ml of deionized water.
2.5 g of Nacl is to be dissolve in 100ml of water gives 10ppm of Na solution.
You add 9.09ml of stock solution to a volumetric and make it up to 1 litre to get a 110 dilution
30 liters of a 10 % solution of fertilizer has .1(30) = 3 liters of fertilizer 1 liter of 30% solution has .3 liter of fertilizer 10 liters of 30% solution has 3 liters of fertilizer so, the chemist needs 10 liters of the 30% solution and 20 liters of water to make 30 liters of a 10% solution.
3179.4 g