A student weighs some water, sugar , and yeast then mixes them together. Some bubbles form. When the bubbling stops, the students weighs the mixtures
Weight before mixing
907
Weight after mixing
851
Why is the weight after mixing less than before mixing?
A:because has formed
B:because water evaporated
C:because the sugar dissolved
D:because the yeast disappeared when mixing water
Answers: 3
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