题目内容

At the freezing point, the relationship between the vapor pressure of solid P1 and the vapor pressure of liquid P2 is ( ). (the solid and liquid are the same substance)

A. p1>p2
B. p1
C. p1=p2
D. uncertain

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The osmolarity of 0.154 mol•L-1 NaCl solution is ( ).

A. 0.154 mmol•L-1
B. 154 mmol•L-1
C. 308 mmol•L-1
D. 462 mmol•L-1

9 g•L-1NaCl solution is isotonic solution, put the normal red blood cells into the following salt water, which can cause hemolysis? ( )

A. 9 g•L-1 salt water
B. 5 g•L-1salt water
C. 10 g•L-1salt water
D. 15 g•L-1salt water

The osmolarity of a hypertonic solution is ( ).

A. greater than 320 mmol•L-1
B. 280-320 mmol•L-1
C. less than 280 mmol•L-1

How many significant figures in 1.0070? ( )

A. 2
B. 3
C. 4
D. 5