1. c. 35
2. <span>d. 1.26 x 10^24 molecules
3. </span><span>d. 303.6 g</span>
Use avogadro's number---> 6.02 x 10^23 atoms= 1 mol
7.81 x 10^21 (1 mole/ 6.02 x 10^23)= 0.0130 moles of Cu
It reacts with it and creates carbon monoxide and the affects of it weakens
Answer: Fluorine
Explanation: Fluorine has an oxidation state of -1, meaning it gains 1 electron in chemical bonds, forming a negative ion. Magnesium has an oxidation state of +2, nitrogen has -3, and lithium has an oxidation state of +1.
