In order to make a peanut butter and jelly sandwich you need two slices of bread 12 g of peanut butter and 15 g of jelly grape what ingredient we run out of first if you had 28 slices of bread 120 g of peanut butter in 135 g of grape jelly

Grape Jelly

Explanation:

There is enough for at least 14 sandwiches with the bread:

28/2 = 14

There is enough for at least 10 sandwiches with the PB.

120/12 = 10

However, there is only enough for 9 sandwhiches with the grape jelly.

135/15 = 9

a chemical reaction happens

explanation:

6.4 cm (max) - 25 cm (min)