Rounding to significant figures? I'm not sure about how many significant figures the result should be rounded
(7.14 e4) + (2.8 e2) = 7.1689 e4
This shoul be rounded to 7.17 ? 7.169 ? Not rounding?
Or any other option?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

What type(s) of intermolecular forces are expected between ch3ch2cooh molecules? dipole forces, induced dipole forces, hydrogen bonding

One nanometer is equal to how many meters?