WILL MARK BRAINLIEST The chocolate in your favorite candy bar has the chemical formula: C7H8N4O2. What elements are present in this formula? How many atoms of each element are in this molecule? Using some of the trends that you described in question 2, what patterns do you notice between these elements on the periodic table?
This was question 2 with my
Describe three patterns, or trends, that exist between elements on the periodic table.

They are the alkali metals, alkaline earth metals, transition metals, other metals, metalloids, non-metals, halogens, noble gases, and rare earth elements.

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

How many grams are in 68.2 molecules of br2?

Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane