Question

Calculate the mass in mg of the aspirin tablet that contains 5.0 grains of aspirin . Assume 1 pound contains 7000 grains.

Answer 1

323.99 mg

Step-by-step explanation:

We need to find the mass of the aspirin tablet that contains 5.0 grains of aspirin.

1 pound = 7000 grains

`1\ \text{grain}=(1)/(7000)\ \text{pounds}`

`5\ \text{grain}=(1)/(7000)* 5\ \text{pounds}\\\\=(1)/(1400)\ \text{pounds}`

We know that, 1 pound = 453.592 grams

Also, 1 pound = 453592 mg

`(1)/(1400)\ \text{pounds}=(1)/(1400)* 453592\ mg\\\\=323.99\ \text{mg}`

Hence, 4 grains of aspirin contains 323.99 mg.