Answer
2.5 moles
Work Step by Step
We are given 450 grams of $C_9H_8O_4$. The question asks us to convert grams to moles.
Our first step is to determine the formula weight of $C_9H_8O_4$. Carbon has a mass of 12 grams per mole, hydrogen has a mass of 1 gram per mole, and oxygen has a mass of 16 grams per mole. Therefore, the entire molecule has a mass of:
$ (12 grams/mole x 9) + (1 gram/mole x 8) + (16 grams/mole x 4) = 180 grams/mole.
Now we can convert from grams to moles.
450 grams x (1 mole/180 grams) = 2.5 moles
