QUESTION 7 How many mL of a solution with 3 mol/L of NaCl do you need...
Question 1You are asked to prepare 50 mL of a 2 g/L solution of CaCl2 you have a stock solution of 140 g/L. How many mL of the stock doyou need to dilute to 50 mL to get this concentration?Question 2 If you mix 7 mL of a 340 g/L stock solution of KCl in a total volume of l000mL. what is the KCl concentration in your solution?Answer in g/L.
You have a 1 M solution of NaCl. How much do you need to dilute to make 10 L of isotonic saline (0.9%)? Remember that the units of volume and concentration must be the same on both sides of the equation.
1. A 751 mL NaCl solution is diluted to a volume of 1.06 L and a concentration of 8.00 M . What was the initial concentration? Express your answer with the appropriate units. 2. How many liters of a 3.18 M K2SO4 solution are needed to provide 98.8 g of K2SO4 (molar mass 174.01 g/mol)? Recall that M is equivalent to mol/L. Express your answer to three significant figures.
A 15.2 mL solution of 0.100 mol L-7 HF is titrated using 0.150 mol L-7 NaOH. What is the pH of the solution after 3.83 mL of the NaOH solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or KB values in your textbook in chapter 15. Answer:
1) How many milliliters of 0.20M PMSF stock solution do you need to make 80 mL 1.2 mM PMSF solution? 2) What is the [H+] (in M) if the pH is 2? 3) What is the [OH-] (in M) if the pH is 12.5 (the digits before the decimal point in a logarithm are not significant figures)?
A 2.8 M solution contains 0.70 mol of NaCl. How many milliliters of solution do you have?
A 2.8 M solution contains 0.70 mol of NaCl. How many milliliters of solution do you have?
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If you dilute 0.025 L of 6.0 mol/L NaOH solution to a final volume of 0.250 L, what is the concentration of the diluted solution? How many moles of HCl are required to make 500. mL of a 3.0 mol/L solution of HCI? What volume of a 10. mol/L H2SO4 solution is needed to make 1.0 L of 1.0 mol/L solution of H2SO4? Zn + 2HCl → ZnCl2 + H2 How many moles of H2 are...
1. (2 pts) A saline solution contains 1.1 % NaCl by mass. How much NaCl is present in 96.3 g of this solution? 2. (4 pts) How many liters of a 0.500 M sucrose (C12H22011) solution contains 1.5 kg of sucrose? 3. (2 pts) To what volume should you dilute 25 mL of a 12 M stock HCl solution to obtain a 0.500 M HCl solution? 4. (2 pts) Write the formula for the conjugate acid of the following bases:...
D Question 20 4 pts You have 3.00 L of a 11.6 M solution. How many liters of solvent do you need to add to create a solution with a concentration of 0.172M? Report your answer to the proper number of significant digits. D Question 21 4 pts You fill a container with 37 moles of Ng. If the container is held at STP, calculate the volume (L) of the N2 in the container. Be sure to put your answer...