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How many grams of NaOH must be added to 0.250 L of water to form a solution of pH equals 10.0?
a pH=10 solution of NaOH should contain 0,0001 moles of NaOH/liter. (1 mole/liter for pH=14, 0,1 for pH=13, etc.)
A mole of NaOH is 40g-s. (Na=23g O=16g H=1g) 0,0001 mole is 0,004gs.
You need the amount necessary for a quarter of a liter, so you divide by four. The result is that you need 0,001gs of NaOH.
So if you need to make that solution without any precise laboratory equipment, you should make much larger quantities and just measure 0,250 l-s.
What else can I help you with?
A solution in a dish contains 3.0 grams of salt dissolved in 100 grams of water if 50 grams of the water evaporatewhat is the solution?
After 50 grams of water evaporate, you will be left with 50 grams of water in which the 3.0 grams of salt is dissolved. So, your solution will now contain 3.0 grams of salt dissolved in 50 grams of water.
If thirteen grams of water is added to a beaker how many ml of water were added?
Thirteen grams of water is the same as thirteen milliliters. So, if thirteen grams of water were added to the beaker, then thirteen milliliters of water were added.
Which is none concentrated solution containing 5 grams of salt and 10 grams of water or a solution containing 18 grams of salt and 90 grams of water?
The more concentrated solution is the one containing 18 grams of salt and 90 grams of water. This is because the concentration of the solute (salt) is higher in this solution compared to the solution containing 5 grams of salt and 10 grams of water.
How 10 percent DNS was prepared?
You have 100 grams of pure dextrose and 9 grams of pure sodium chloride added to one liter of distilled water. The solution is sterilized and packed in polypropylene or polyethylene bottles.
An aqueous solution of LiF?
An aqueous solution of LiF would consist of lithium ions (Li+) and fluoride ions (F-) dissolved in water. LiF is a soluble ionic compound, so it dissociates into its ions in water. The solution would be colorless and odorless.
What is the mass of the solution 17.8 grams of sodium chloride are added to 217 grams of water?
The mass of the solution would be the sum of the mass of the sodium chloride and the mass of water. So, the mass of the solution would be 17.8 grams (NaCl) + 217 grams (water) = 234.8 grams.
- How many grams of water should be added to prepare a 2% solution by mass with 16.5g of MgCl….A) 402.5B) 808.5C) 155D) 400E) 82.5?
E) 82.5 grams of water should be added.
How much water must be added to 12 grams of a 90 percent iodine solution to produce a 25 percent iodine solution?
12*(90%)=10.8=X*.25 10.8/.25=X=43.2 43.2-12=31.2 31.2 grams of water must be added
A solution in a dish contains 3.0 grams of salt dissolved in 100 grams of water if 50 grams of the water evaporatewhat is the solution?
After 50 grams of water evaporate, you will be left with 50 grams of water in which the 3.0 grams of salt is dissolved. So, your solution will now contain 3.0 grams of salt dissolved in 50 grams of water.
How much water needs to be added to a 5g vial of drug powder to make a 2.5 percent solution?
195 grams.
If thirteen grams of water is added to a beaker how many ml of water were added?
Thirteen grams of water is the same as thirteen milliliters. So, if thirteen grams of water were added to the beaker, then thirteen milliliters of water were added.
How much calcium chloride should be added to a liter of water to produce a saturated solution?
This is from the website linked to the left of this answer under Web Links:Solubility in water, g/100 ml at 20°C: 74.5Therefore, in 1 liter, 745.0 grams of CaCl2 will dissolve to make a saturated solution.
How much grams of ferric chloride to be added in 100ml of water to get 2 percent solution?
To prepare a 2% solution of ferric chloride in 100ml of water, you would need to add 2 grams of ferric chloride. This is calculated by multiplying the volume of the solution (100ml) by the desired concentration (2%) and converting it to grams.
How many grams sugar need to be added in a 100mL water to make a 10 sugar solution?
To make a 10% sugar solution you need to dissolve 10 grams of sugar and bring the volume up to 100 ml
Which is none concentrated solution containing 5 grams of salt and 10 grams of water or a solution containing 18 grams of salt and 90 grams of water?
The more concentrated solution is the one containing 18 grams of salt and 90 grams of water. This is because the concentration of the solute (salt) is higher in this solution compared to the solution containing 5 grams of salt and 10 grams of water.
How much grams of ammoinum thiocyanate to be added in 100ml of water to get 1 percent of solution?
Very simply 1g of ammonium thiocyanate and 100g (100ml) of water!
How many milliliters water equals 500 grams?
For water (this only applies to water): grams = milliliters.
