Microbiology 020 - General Microbiology » Spring 2022 » Questions on Concentration

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Question #1
12 ml of 5% NaCl (salt) solution requires _____ grams of salt.
A.   0.8
B.   0.1
C.   0.6
D.   0.4
Question #2
Physiological saline (salt) solution is 0.9% NaCl. 1.8 g of NaCl dissolved in a total volume of _____ ml would produce a 0.9% NaCl solution.
A.   200
B.   100
C.   500
D.   1000
Question #3
15 g of sugar dissolved in 150 ml of water would be a ________ % solution, which is equivalent to _______ g/ml.
A.   5, 1
B.   15, 0.15
C.   20, 0.3
D.   10, 0.1

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