13 Jun BIOL 1362 What is the MW in grams if one molecule weighs
Question
31.What is the MW in grams if one molecule weighs 6.664 x 10-20 g?
32.What is the weight in grams of 1 x 1023 molecules of NaCl (MW = 58)?
33.What molarity (M) is 0.9% glucose (MW = 180) solution?
34.What molarity (M) is 90 mg/mL of glucose (MW = 180) solution?
35.150 g/liter of a particular chemical is required to obtain a 0.5 M solution. How much
of this chemical is required to obtain a 30 ?M solution?
36.You want to prepare a 500 mL of 1.5 M solution of NaCl. You have powder, a
beaker, a graduated cylinder and a bottle. How you would prepare the solution
(MW of NaCl = 58)?
37.You wish to prepare a 500 mL of 10 mM solution of KCl. Starting from KCl powder,
how would you prepare the solution? (MW of KCl = 74)
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