Express in scientific notation. choose the answer with the proper number of significant figures. 0.47 x 10^-17 0.5 x 10^-17 5 x 10^-18

um i think it might be a car?

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

answer: mole of the gas

answer: mole of the gasexplanation:

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;