Different manufacturers claim to have the best antacid. Which of the following tablets

would neutralize the most acid for the money?
A. Rolaids (550 mg CaCO3 and 110 mg Mg(OH)2 per tablet) – 150 tablets for $9.44
B. Tums (500 mg CaCO3 per tablet) – 150 tablets for $5.49
C. Phillips (1200 mg Mg(OH)2 per 15 mL) – 769 mL for $9.99

3 answers

first calcluate the price per mole
Example: A. moles=.550/molmassCaCO3 +.110/molmassMg(OH)2
price per mole= 9.44/moles
Do this for the other two.
C. moles=1.200/molmassMg(OH)2 Price /mole=9.99/molemassMg(OH)2

Now,because the acid neutralizing of all three is the same on a MOLE basis, the above listing of price/mole tells you the price compared on an equal acid neutralizing basis.

Thank you for the help!!

you take 6 times 8 and get 48