If you have 1.21 kg of pure aspirin, how many 81 mg low-dose aspirin tablets can be produced from this amount?

• A. 1,210 tablets
• B. 14,938 tablets
• C. 81 tablets
• D. 121 tablets

Answer: (B)

Verified step by step guidance

1. Convert the mass of pure aspirin from kilograms to milligrams to match the units of the tablet dosage. Use the conversion factor: 1 kg = 1,000,000 mg. So, multiply 1.21 kg by 1,000,000 mg/kg to get the total mass in mg.
2. Identify the mass of aspirin per tablet, which is given as 81 mg per tablet.
3. Calculate the number of tablets by dividing the total mass of aspirin (in mg) by the mass of aspirin per tablet (81 mg). Use the formula: \(\text{Number of tablets} = \frac{\text{Total mass of aspirin (mg)}}{\text{Mass per tablet (mg)}}\).
4. Perform the division to find the total number of tablets that can be produced from 1.21 kg of aspirin.
5. Interpret the result as the maximum number of 81 mg tablets that can be made from the given amount of pure aspirin.