83. If a drug dose is 50 mcg how many doses are contained in 0.01 g?
Answer: C
There are 200 doses contained in 0.01 g.
To determine the number of doses in 0.01 g when each dose is 50 mcg, we first convert grams to micrograms. Since 0.01 g is equal to 10,000 mcg, dividing this amount by the dose of 50 mcg gives us 200 doses.
A) 2
This option is incorrect because if 0.01 g is considered, it would not provide only 2 doses. Dividing 10,000 mcg by 50 mcg results in 200 doses, not 2.
B) 20
This option is also incorrect. If there were only 20 doses, that would imply a total of 1,000 mcg (20 x 50 mcg), which is much less than the available 10,000 mcg in 0.01 g.
C) 200
This is the correct option. Converting 0.01 g to micrograms results in 10,000 mcg. Dividing this by the dose of 50 mcg provides a total of 200 doses, which accurately reflects the correct calculation.
D) 2000
This option is incorrect as it suggests that there would be 2000 doses. If each dose is 50 mcg, that would require 100,000 mcg in total, which far exceeds the 10,000 mcg present in 0.01 g.
Conclusion
The correct answer is 200 doses because the conversion from grams to micrograms and the straightforward division of total micrograms by the dose clearly leads to this number. All other options fail to accurately reflect the calculations based on the initial drug dosage and total amount available.