Will mark ! pls
a word problem tells you that you have 27.8 moles of carbon dioxide. it asks how much that is in grams of carbon dioxide. luckily, they also supply a conversion factor. 1 mole of carbon dioxide is equal to 44 grams of carbon dioxide. you set up a conversion equation in the format shown in the image. what would you write in the space labeled 'a' in the diagram.
a. 27.8 moles of carbon dioxide
b. 1 mole of carbon dioxide
c. 44 grams of carbon dioxide

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.