You need 841,536 g NaCl.
The first solution (500 g/L) is more concentrated than the second (200 g/L).
342 grams of Lactose in 1 litre water or 34.2 grams in 100 mls.
HCl has a molar mass of 36.461 grams per mole. This means that 72.922 grams of HCl are needed per liter of water to make a solution that has a concentration of 2M.
A solution containing 5 g sodium chloride in 10 g water doesn't exist.
Take twice its molar mass in grams and then dissolve in water up to 1.000 Litre
148g
2.5 molar calcium chloride
Moles of solute ---------------- Liters of solution So, convert your grams to moles by dividing by the molar mass (add together the atomic masses of the solution) and then that will give you your moles. Divide that number by your 6.3 Liters. That number is your molarity.
* 50 g salt/100 g water is a more concentrated but a saturated sodium chloride solution (the solubility of NaCl at 20 0C is approx. 36 g/100 mL).* 18 g salt/90 g water is a 20 % sodium chloride solution.The first solution is more concentrated.
180
1 molar solution of sugar water contains 342,3 g sucrose.
Let me translate the question: I think you are asking how to make a 0.1 molar solution of Na2S2O4. Molarity is moles of solute divided by liters of solution. To make this easy, let's assume you want to make one liter of the solution. That means you need to dissolve in 0.1 moles of Na2S2O4 into one liter of water to make a 0.1 molar solution. The formula weight of Na2S2O4 is 174.1 grams per mole so 0.1 moles of it is 17.41 grams. Therefore you would need to dissolve 17.41 grams of Na2S2O4 into one liter of water to make a 0.1 molar solution.