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Q: How many grams of NaOH are needed to make 100 milliliters of 0.2 molar solution of NaOH?

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how many grams of calcium nitrate are needed to make a 500ml volume of a .5 molar solution

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.

148g

I suppose that this solution doesn't exist.

Only a compound has a molar mass not a solution.

To convert to per litre we multiply weight by 2. This gives 40 grams per litre. 40g divided by 40g/mol is a 1 molar solution.

100mL is needed to neutralize 50 ml of a 0.2 molar solution of HCL.

290 grams

6 molar

FeS + 2HCl >> FeCl2 + H2S 75 grams FeS (1mole FeS/87.92 grams)(2 mole HCl/1 mole FeS) = 1.71 moles HCl 2 Molar HCl = 1.71 moles HCl/Liters = 0.855 Liters HCl, or as asked for; 855 milliliters of hydrochloric acid needed

A 0.205 M solution will have 0.205 moles per liter. 250 milliliters is 1/4 of a liter, so in that sample, there will be 0.05125 moles. NaOH has a molar mass of 39.9971 grams per mole, so 2.05 grams added to 250 mL of water will make the desired solution.

Calcium sulfate is very low soluble in water - 2,1 g/L at 20 0C.

The solution is 4 Molar.

Molarity = moles of solute/Liters of solution 3 M KBr = moles KBr/1 liter = 3 moles KBr (119 grams/1 mole KBr) = 357 grams needed

H2SO4 has a molar mass of 98.1 grams per mole. To prepare a 0.5 M solution, add 49.05 grams of sulfuric acid per liter of water.

~58.5 g ~58.5 g 58.443 g

Molarity = moles of solute/volume of solution 1.50 M = X Moles/125ml = 187.5 millimoles, which is 0.1875 moles The molar mass of CaCl2 = 110.98 grams 0.1875 moles CaCl2 (110.98g/1mol) = 20.8 grams needed

It is necessary to know the molar mass of the solute to answer.

The molar concentration of the hydrogen ions

342 grams of Lactose in 1 litre water or 34.2 grams in 100 mls.

The answer is 830,014 grams.

In 500ml there are 3.5 grams. Therefore in 1 litre, there are 7g. 7/58.443 is 0.1198 molar.

The molar solution of NaCl has 58.44 g in 1 L water.

0.265L1.5M98 Molar Mass=39g

Take twice its molar mass in grams and then dissolve in water up to 1.000 Litre