The administration of 100 mg or more of morphine (molar mass 283) to apatient would probably be lethal. Which of the following wouldyou consider to be a safe dose?Question 7Select one:a.10 ml of a 0.1 percent solution (w/v)b.10 ml of a 0.04 M solutionc.10 ml of a 10 mg/ml solutiond.10 ml of a 100 mM solutione.none of the above
Question
The administration of 100 mg or more of morphine (molar mass 283) to apatient would probably be lethal. Which of the following wouldyou consider to be a safe dose?Question 7Select one:a.10 ml of a 0.1 percent solution (w/v)b.10 ml of a 0.04 M solutionc.10 ml of a 10 mg/ml solutiond.10 ml of a 100 mM solutione.none of the above
Solution 1
To answer this question, we first need to understand what each option means:
a. 10 ml of a 0.1 percent solution (w/v) means that there are 0.1 grams of morphine in 100 ml of solution. So, in 10 ml, there would be 0.01 grams or 10 mg of morphine.
b. 10 ml of a 0.04 M solution means that there are 0.04 moles of morphine per liter of solution. Since the molar mass of morphine is 283 g/mol, this means there are 0.04*283 = 11.32 grams per liter, or 113.2 mg in 10 ml.
c. 10 ml of a 10 mg/ml solution means that there are 10 mg of morphine per ml of solution. So, in 10 ml, there would be 100 mg of morphine.
d. 10 ml of a 100 mM solution means that there are 100 millimoles of morphine per liter of solution. Since the molar mass of morphine is 283 g/mol, this means there are 100*283/1000 = 28.3 grams per liter, or 283 mg in 10 ml.
Given that 100 mg or more of morphine could be lethal, the only safe dose from the options provided would be:
a. 10 ml of a 0.1 percent solution (w/v)
Solution 2
To answer this question, we first need to understand what each option means:
a. 10 ml of a 0.1 percent solution (w/v) means that there are 0.1 grams of morphine in 100 ml of solution. So, in 10 ml there would be 0.01 grams or 10 mg of morphine.
b. 10 ml of a 0.04 M solution means that there are 0.04 moles of morphine per liter of solution. Since the molar mass of morphine is 283 g/mol, this means there are 0.04*283 = 11.32 grams of morphine per liter, or 113.2 mg in 10 ml.
c. 10 ml of a 10 mg/ml solution means that there are 10 mg of morphine per ml of solution. So, in 10 ml there would be 100 mg of morphine.
d. 10 ml of a 100 mM solution means that there are 100 millimoles of morphine per liter of solution. Since the molar mass of morphine is 283 g/mol, this means there are 100*283/1000 = 28.3 grams of morphine per liter, or 283 mg in 10 ml.
Given that 100 mg or more of morphine could be lethal, the only safe dose from the options provided would be:
a. 10 ml of a 0.1 percent solution (w/v) which contains 10 mg of morphine.
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