Which of the following is a correctly balanced equation? a. naclo3 → nacl + 3o2 b. 2hgo → 2hg + o2 c. 2zns + o2 → 2zno + 2so2 d. 4co + fe3o4 → 4co2 + fe e. 2fe + 2cl2 → 2fecl3

The correct answer for this is B. Count up the atoms. They should be equal for each side of the equation.

B. 2HgO → 2Hg + O2

Explanation:

In order to have a correctly balanced equation, you need to have the same amount of elements and molecules of those given elements in both sides of the equation, so in this one there hare 2 molecules of Hg and 2 of Oxygen in the left, and in the rigth, there are 2 Hg, and one molecule of O2 which are 2 molecules of oxygen. So the one that is correctly balanced is B. 2HgO → 2Hg + O2

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.