Question

part a
how many low dose 81 mg aspirin tablets can be made from 1.21 kg of aspirin?
1.5×10⁴ tablets
15×10³ tablets
121×10³ tablets
1.21×10⁴ tablets
15×10⁵ tablets

Explanation:

Step1: Convert kg to mg

We know that 1 kg = 1000 g and 1 g= 1000 mg. So, 1 kg = 1000×1000 mg = 10^6 mg. Then 1.21 kg of aspirin is 1.21×10^6 mg.

Step2: Calculate the number of tablets

To find the number of 81 - mg tablets, we divide the total amount of aspirin in mg by the mass of each tablet. Let \(n\) be the number of tablets. Then \(n=\frac{1.21\times 10^{6}\text{ mg}}{81\text{ mg}}\approx1.5\times 10^{4}\)

Answer:

1.5×10^4 tablets