Biology, 18.10.2019 04:00 batmanmarie2004

Me : (

when heating a test tube or flask,

a)it should remain capped.

b)an experimenter can briefly look directly into the tube to make observations.

c)it should remain in the test tube rack.

d)safety goggles should be worn for the duration of the experiment.

Answers: 1

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You know the right answer?

Me : (

when heating a test tube or flask,

a)it should remain capped.