You need to measure out .23 mol of C8H16O8 for an experiment. How many grams would you need to weigh out?

1 Answer
Apr 26, 2018

55.2497g C_8H_16O_8

Explanation:

.23mol C_8H_16O_8

First, let's find the molar mass of C_8H_16O_8 by calculating the mass of each element.

Carbon weighs 12.011 grams, and we have 8 of those. Multiply.

96.088g Carbon

Hydrogen weighs 1.008 grams, and we have 16 of those. Multiply.

16.128g Hydrogen

Oxygen weighs 15.999, or 16g, and we have 8 of those. Multiply.

128g Oxygen

Add the atomic masses.

240.216g is the molar mass of C_8H_16O_8.

Now, to find the number of grams needed, set up a proportion.

.23mol C_8H_16O_8 * (240.216/1), where 240.216 represents the molar mass of the substance and 1 represents the # of moles. Divide accordingly. Moles on top and bottom cancel out.

Answer: 55.2497g C_8H_16O_8