Question

Calculate the percent by mass of Red Dye 40 in strawberry Kool-Aid.

a) 1%
b) 5%
c) 10%
d) 20%
e) 25%

Answer 1

To calculate the percent by mass of Red Dye 40 in strawberry Kool-Aid, divide the mass of Red Dye 40 by the total mass of strawberry Kool-Aid and multiply by 100%.

Step-by-step explanation:

To calculate the percent by mass of Red Dye 40 in strawberry Kool-Aid, we need to know the mass of Red Dye 40 and the total mass of the strawberry Kool-Aid. Let's assume we have 100 grams of strawberry Kool-Aid and it contains 20 grams of Red Dye 40.

To calculate the percent by mass, we divide the mass of Red Dye 40 by the total mass of strawberry Kool-Aid and multiply by 100%. So, the percent by mass of Red Dye 40 in strawberry Kool-Aid is:

(20 g / 100 g) x 100% = 20%