Answer:
5.71 x 1021 (C)
Explanation:
Because if the numbers are over 5 then u round to the next number. So since 6 is bigger than 5 that means is gonna round up so it will be 7 and so. I hope that helps a bit
Yo answer is dependent variable it should be :) trust
Answer:
how do i calculate that?tell me how and i will try to do your math
Is constant (matter that has a composition that is the same everywhere)
It's atomic mass is 1 .00794u and H is the symbol