Which contains 3 significant figures.
a. 5.0x10^2
b. 500
c. 0.001
d. 1.00x10^-3
e. 0.00100
f. 395

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206