32-9.4=22.6, how do u put 22.6 in significant fig?n another?

32-9.4=22.6, how do u put 22.6 in significant fig?


n another question.





2.)if one atom is .286 nm in diameter n is stacked one on top of each other, how many atoms thick is the aluminum?





3.) .1/80=.001 how do u put in sig fig

32-9.4=22.6, how do u put 22.6 in significant fig?n another?
when you add or subtract sig figs, you go by the number of decimal places. the solution will have one dec. place, so the answer will have to be put into scientific notation.





22.6 to 2 sig. fig = 2.3*10^1





#2, reword the question pls.





#3) 1*10^-3