10. What is the mass of CaCl2•2H20 (MW 147.02) in grams needed to prepare 2.0E+02 ml....
Please calculate these two problems. 11. What mass of KCI (MW 74.5513) in grams is needed to prepare 100 mL of a 1.6 M solution of KCI? O 11.9 O 0.084 O 6.41 6.412 O 12 0.1559 Submit Answer Incorrect. Tries 1/2 Previous Tries This discussion is closed. wwww.du 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 O 11.8 O...
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?
A chemist wants to make 6.0 L of a 0.280 mol L1 CaCl, solution Part A What mass of CaCl2 (in grams) should the chemist use? Express your answer using two significant figures. m Request Answer Previous Answers Submit X Incorrect; Try Again; 3 attempts remaining
om op 10.02leic acid boleton? • O time Timer Notes notes volume Evaluate Course Contents ... >> Expt 7 Riboflavin by Fluorescence Spectroscopy > Q10 problem 10. What volume of 0.200 M acetic acid (in mL) is needed to prepare 300 mL of a 0.024 M acetic acid solution? O 36 O 0.028 O 72.0 36.0 Submit Answer Incorrect. Tries 1/2 Previous Tries This discussion is closed. pe Course Contents y 14. The unknown tablet is prepared for analysis in...
grams of KHP 0.6413 mL NaOH needed to titrate KhP to endpoint 38.80 Grams of unknown acid: 1.5106 mL NaOH needed to titrate unknown acid to endpoint 33.55 need to know molarity of NaOH solution and Molar mass of unknown acid. Please help and show work! CHEM 265 LAB EXPERIMENT NUMBER 4 DETERMINATION OF THE MW OF AN UNKNOWN ACID This experiment utilizes a titration to determine the molecular weight of an unknown acid. In this experiment, the endpoint of...