How many 400-mg aspirin tablets can be made from 40.0-kg of aspirin?

40.0 x 10^3 divide by 400 x 10^-3 = 100 000 tablets

To find out how many 400-mg aspirin tablets can be made from 40.0 kg of aspirin, we need to determine the number of tablets that can be produced by dividing the total mass of aspirin by the mass of a single tablet.

First, let's convert the mass of aspirin from kilograms (kg) to milligrams (mg) since the mass of the tablets is given in mg.

1 kg = 1,000,000 mg (since there are 1000 mg in one gram, and 1000 grams in one kilogram)
So, 40.0 kg is equivalent to 40,000,000 mg.

Next, we divide the total mass of aspirin by the mass of a single tablet, which is 400 mg:

Number of tablets = Total mass of aspirin / Mass of a single tablet
Number of tablets = 40,000,000 mg / 400 mg

Now, performing the division:

Number of tablets = 100,000 tablets

Therefore, 40.0 kg of aspirin can make approximately 100,000 400-mg aspirin tablets.