PLEASE SHOW WORK! Answers are included.
What is the molarity of a 20% by weight solution of NaOH? MW=39.99
A: 5M
What percentage (%) is 1.5M NaOH?
A: 6%
How would you prepare 250 mL of a 0.5M NaCl solution? MW=58.44
A: 7.31g NaCl and H2O until reach 250 mL
If you add 10g of NaCl to 500 mL, what is the concentration, in percent, of the solution?
A: 2% NaCl solution
If you add 10g of NaCl to make a 3M solution, what is the total volume? MW=58.44
A: 57 mL NaCl solution
Given 30% NaOH solution, how many mL’s of solution would you use to prepare 300 mL of 10% solution?
A: 100 mL NaOH
If you use 10 mL of a 25% NaOH solution to dilute to a final volume of 100 mL, what is the final concentration?
2.5% NaOH solution
If you use 10 mL of stock NaCl solution to make 20 mL of 0.3M NaCl solution, what is the concentration of the stock solution?
A: 0.6M
PLEASE SHOW WORK! Answers are included. What is the molarity of a 20% by weight solution...
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Find the concentration (molarity) of an aqueous solution prepared by dissolving 10g of NaOH(s) in 100mL of water. Find the concentration (molarity) of a NaOH solution that contains 5g of NaOH and 1000 mL of water. What is the new concentration when we add 1L more of water to the prepared solution in question (2).? If you have 10 ml of a 5M solution of NaOH, how many mol of NaOH you have? How many mol of Na+ you have?...
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In the simulation below, you will be working with a 10.00 mL solution, which you will make up of the dye and the bleach. You will be using a 10 mL serological pipet to deliver the dye and a 1 mL syringe to deliver the bleach to a vial, which you will place into the spectrophotometer. You will have to ensure that the solution is mixed well throughout the experiment by means of a magnetic stirrer. You are given a...
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please just the answers without the work 1. Determine the molarity of the solution containing 1.5 moles of NaOH in 1000 mL total volume of solution. 2. Determine the molarity of the solution containing 0.4 moles of NaOH in 100 mL total volume of solution. 3. Determine the molarity of the solution containing 1.5 moles of KNO3 in 250 mL total volume of solution. 4. Determine the molarity of the solution containing 2.4 moles of KI in 140 mL total...
You are asked to prepare 500 ml of a 0 250 M acetate Puffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76). 3 00 M NaOH, water. Answer the following questions regarding the preparation of the buffer. How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. What volume of 3.00...