header bg

Scan QR code or get instant email to install app


What is the weight/weight percent (w/w%) of 412.5 mg of nitroglycerin in 33 grams of a compounded prescription?

A 1.25% nitroglycerin

Weight/weight (w/w%)—measured in grams of the ingredient/100 grams of the total product: 412.5 mg = 0.4125 grams (There are 1,000 mg in one gram—just move decimal 3 places to the left.) 0.4125 grams/33 grams = 0.0125 = 1.25% (To get a %, multiply by 100—or move the decimal 2 places to the right.)

Related Information



3 years ago

I recommend!


3 years ago

I like this App a lot. I got a few apps to prepare for PTCE but this is the best one so far! It has tests and practice questions with explanations.


3 years ago

Awesome app

Leave a Reply

Your email address will not be published.