1.8x10^-5 + 3.25x10^-4 + 4.6x10^2 in significant figure form??
1.8 * 10-5 + 3.25 * 10-4 + 4.6 * 102 =
460 + 0.000 325 + 0.000 018 = 460.000 343 = 4.600 003 43 * 102
1.8 * 10-5 has two significant figures, so do 4.6 * 102.
Thus we can write: 460.000 343 ≈ 4.6 * 102
460.000343
Your question doesn't by any chance have anything to do with acetic acid?
