well you can't walk through the air but you can't walk through a concrete wall because all of the solid atoms holding it together
Equal. Good luck with other questions!
Answer:
Option A (0.043 g) is the correct answer.
Explanation:
Given:
= 43 mg
As we know,

then,
⇒ 
Thus, the above is the correct alternative.
You can tell if each side of the equation has the same molar mass.