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Please calculate these two problems.
11. What mass of KCI (MW 74.5513) in grams is needed...
10. What is the mass of CaCl2•2H20 (MW 147.02) in grams needed to prepare 2.0E+02 ml....
10. What is the mass of CaCl2•2H20 (MW 147.02) in grams needed to prepare 2.0E+02 ml. of a 0.4000 M solution of Ca2+ (MW 40.078)? O 0.312 11.8 O 0.3119 O 0.0850 • 11.76 O 0.04990 Submit Answer Incorrect. Tries 1/2 Previous Tries This discussion is closed.
What is the mass of CaCl2•2H2O (MW 147.02) in grams needed to prepare 1.0E+02 mL of...
What is the mass of CaCl2•2H2O (MW 147.02) in grams needed to prepare 1.0E+02 mL of a 0.4300 M solution of Ca2+ (MW 40.078)?
What mass of KCl (MW 74.5513) in grams is needed to prepare 100 mL of a 1.3 M solution of KCl?
What mass of KCl (MW 74.5513) in grams is needed to prepare 100 mL of a 1.3 M solution of KCl?
please answer questions 2 and 3 QUESTION 2 What mass of NaCl is needed to prepare...
please answer questions 2 and 3
QUESTION 2 What mass of NaCl is needed to prepare 100.0 mL of 0.500 M NaCl solution? O 0.856 g O 0.342 g O 2.92 g O 1.17 g QUESTION 3 What volume of 5.00 M NaOH stock solution is needed to prepare 100.0 mL of 0.250 M NaOH solution? O 0.200 mL 0 12.5 mL 5.00 mL 80.0 mL Click Save and submit to save and submit. Click Save an Anen
please show all steps 3. Calculate the mass in grams, of KNO3(s) needed to make 750 mL of a 1.65 M solution.
please show all steps
3. Calculate the mass in grams, of KNO3(s) needed to make 750 mL of a 1.65 M solution.
10. What is the mass of CaCl2•2H20 (MW 147.02) in grams needed to prepare 2.0E+02 ml. of a 0.4000 M solution of Ca2+ (MW 40.078)? O 0.312 11.8 O 0.3119 O 0.0850 • 11.76 O 0.04990 Submit Answer Incorrect. Tries 1/2 Previous Tries This discussion is closed.
please answer questions 2 and 3
QUESTION 2 What mass of NaCl is needed to prepare 100.0 mL of 0.500 M NaCl solution? O 0.856 g O 0.342 g O 2.92 g O 1.17 g QUESTION 3 What volume of 5.00 M NaOH stock solution is needed to prepare 100.0 mL of 0.250 M NaOH solution? O 0.200 mL 0 12.5 mL 5.00 mL 80.0 mL Click Save and submit to save and submit. Click Save an Anen
please show all steps
3. Calculate the mass in grams, of KNO3(s) needed to make 750 mL of a 1.65 M solution.
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