Chemistry, 03.03.2021 21:40 sosakag3

A student placed 3 grams of one reactant in a beaker and added 4 grams of another reactant A chemical reaction took place in the uncovered beaker When the student weighed the beaker after the reaction, she found the contents of the beaker weighed 5 grams Which of the following is the best possible explanation for her results?

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