Question 2.
Ans: 2.92 g
Molecular weight of NaCl is 58.44. So 58.44 g in 1000 mL is 1M.
29.2 g in 1000 mL is 0.5 M solution, we need 100 mL, so 2.92 g in 100 mL is 0.5 M.
Question 3.
Ans: 5mL
Formula to calculate volume is,
M1×V1= M2×V2
5× V1= 100× 0.25
V1= 25/5
V1= 5 mL
please answer questions 2 and 3 QUESTION 2 What mass of NaCl is needed to prepare...
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> Click Submit to complete this assessment. Question 5 of 5 Question 5 20 points Save Answer You add 7.50 mL of 0.0500 M NaOH to 25.00 mL of pure water, and to thig mixture you then add 1.50 ml of 0.200 M HCL What will be the pH of the resulting solution? 2.08 266 11,34 11.92 07.00 Question 5 of 5