Explanation:
400×10=4000m
20×60=1200s
S=D÷T
S=4000÷1200
S=3.33m/s
Answer: A boron atom has 2 electrons at the first energy level and 3 electrons at the second energy level.
Answer:
Chamber
Answer:0.233333333
Explanation: Let me be!
c
the correct answer would be answer c
Solutions in the attachment.
