jasmineanitak16
jasmineanitak16
24.09.2020 • 
Biology

Marian is crushing cookies to use as an ice cream topping. She has 450 grams of cookie crumbs when she is finished. According to the law of conservation of mass, what was the mass of the cookies when they were whole? a. 550 grams
b. 400 grams
c. 450 grams
d. 225 grams

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