A sunscreen preparation contains 2.50% by mass benzyl

Step 1 of 2

Here, we have to find out  the mass of benzyl salicylate is needed to manufacture the 325 tubes of sunscreen.

Given :

Mass of benzyl salicylate for sunscreen preparation - 2.50%

Ounces of sunscreen present in one tube - 4.0 oz

Ounces of sunscreen present in the 325 tubes -----?

First, let’s find out the sunscreen present in the 325 tubes

325  = 1300 oz.

Let’s convert the ounces into kilograms

1 kg = 35.02 oz

So, the conversion factor is 

Let’s convert the 1300 ounces into kilograms

1300 oz  =  36.93 kg

Therefore , 325 tubes contains 36.93 kg of sunscreen.

_______________