For example, say you are at home and a lightbulb goes out. Noticing that the lightbulb is out is an observation. You would then naturally question, “Why is the lightbulb out?” and come up with possible guesses, or hypotheses.
Answer:
This type of meat is substance. If you were talking about meters then it would be a system of measurement.
Answer:
NH3 , SO3 , BF3
Explanation:
trigonal planar = AB3 ------------> Coordination number = 3
for example = NH3 , SO3 , BF3
all of them are trigonal planar
Volume= h*l*w
2*3*2=12cm
You're answer is 12cm. Hope it helps!