How many molecules are in 83.2 g of chlorine gas (Cl2)? Group of answer choices
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules

Which of the following statements best explains why chemistry is testable a) it can measure data by experiments b) it cannot add new evidence c) it cannot be verified d) it is biased