Answer:
D. either acid or fire
Explanation:
When doing an experiment with acid or fire, you do not want the substance to end up in your eyes. It is important you wear goggles to protect yourself.
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I’m 100% sure that is it answer B. 8 minutes
P=phosphorus
N=nitrogen
P3N2 is triphosphorus dinitrogen (a covalent compound)
Answer:
2
Explanation:
It is going through the air and is moving so that means that it has kinetic energy. But it is also going to go the down, which gives it potential energy.