How many molecules of aspirin (molar mass = 180 amu) are present in 50 mg tablet ?

Explanation

To find out how many molecules of aspirin are present in a 50 mg tablet, we can follow these steps:

### Step 1: Convert the mass of aspirin from milligrams to grams.
Since the molar mass is given in grams, we need to convert 50 mg to grams.
\[ \text{Mass in grams} = \frac{50 \text{ mg}}{1000} = 0.050 \text{ g} \]

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