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Mathematical problems. 800,000 bottles of penicillin u1; Every 1u( 1 international unit)
1.20000 units/ml or 20000 units /0. 1 ml

2.2000 u/ml or 2000 u/0. 1 ml.

3.2 thousand units/ml or 200 units /0. 1 ml

4.500 units/ml or 50u/0. 1 ml.

The formula used in the fourth question is wrong, it should be:

Infusion coefficient = infusion time × infusion drops per minute × infusion volume.

10×50×60÷ 1000=30