A commercial mouthwash contains 12.4 g of ethanol and 0.049 g of antiseptic in each 65. -mL portion. Calculate the
component. Be sure each of your answer entries has the correct number of significant figures.
Part 1 of 2
weight
volume
percent concentration for each
%
weight
volume
ethanol
Part 2 of 2
%
weight
volume
antiseptic
Part 1:
Ethanol:
- Weight: 12.4 g
- Volume: 65 mL
- Percent concentration: (12.4 g / 65 mL) x 100% = 19.1%
Antiseptic:
- Weight: 0.049 g
- Volume: 65 mL
- Percent concentration: (0.049 g / 65 mL) x 100% = 0.075%
Part 2:
Antiseptic:
- Percent concentration: 0.075%
- Weight: 0.049 g
- Volume: 65 mL