Petra dropped her beaker on the floor. She placed her gloves on the table. She then started to pick up the small pieces with her hand and place them in the broken-glass container. At the end of lab, she told her instructor that there was broken glass on the floor. The teacher swept it up and placed the glass in the broken-glass container. Aside from dropping the beaker, how many errors did Petra commit?

one
two
three
four

three

Explanation:

Three

Explanation:

1.Dropping said beaker

2.Removing her gloves

3.Picking up the item with her hands exposed

If this was a crime then she would have gotten her fingerprints all over the beaker and since its glass it should not be too hard to identify as a fingerprint.

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your answer would be a. 12.5 kg