ANSWER i) Oxygen enters the blood from the lungs and carbon dioxide is expelled out of the blood into the lungs. ii) The blood serves to transport both gases. iii) Oxygen is carried to the cells. iv) Carbon dioxide is carried away from the cells.
If the dose requires that a total of 40 mg be given, then you take the ratio of the stock bottle (mg/mL) and solve for the total amount of mL that are needed by multiplying the amount of mL required (x):
Multiply by 5 on both sides to give:
Then solve for x:
Another, possibly quicker, way to solve would be to set up a proportion - one side the stock bottle ratio, and the other side the dosage requirements:
Cross multiply and you get:
And you would solve this the same way as above.
So the patient should receive 9.091 mL of secobarbitol.