171 because 57x3=171.
BOOM!!
Shakalaka.
13. Nt
14. St
15. St
16. At
17. Nt
Answer:
a star is like the sun a burning ball of gas that gives light to the outer space.
Explanation:
Your answer is B. radio waves have shorter wavelenghts than microwaves.
Have a great day
U-238
The number besides the U means its total molar mass. The molar mass of this element is 238
Molar mass= protons + neutrons
This means that 238= 146 + protons
Do 238 - 146
Answer is 92
