Question

A student measured out 0.333 moles of theobromine, CyH3N402 (MM = 180.8/mol) the

primary alkaloid found in chocolate. How many molecules of theobromide did the
student measure

Answer 1

2.0 x 10²³ molecules.

Step-by-step explanation

Given:

The number of moles of theobromide measured out = 0.333 moles.

MM of theobromide = 180.8 g/mol

What to find:

The number of molecules of theobromide the student measured.

To go from moles to molecules, multiply the number of moles by Avogadro's number.

The Avogadro's number = 6.02 x 10²³

1 mole of theobromide contains 6.02 x 10²³ molecules.

So, 0.333 moles of theobromide measured out will have (0.333 x 6.02 x 10²³) = 2.0 x 10²³ molecules.