Answer:
Number of neutrons=5
Step-by-step explanation:
We are given that
Number of protons in lithium=Z=3
Mass number of lithium=A=8
We have to find the neutrons in the isotope lithium-8.
We know that
Number of neutrons=A-Z
Where A= Mass number
Z= Number of protons=Atomic number
Substitute the values then we get
Number of neutrons=8-3=5
Answer : 5
20
Answer: A = 89 m²
A = BH - ½bh
A = 13(8) - ½(13 - 4 - 4)(6)
A = 104 - 15 = 89
its 60
I think it's this 62.13 in↑3.
I hope it's right!
