Molar Conversions Lab
Purpose: To practice converting molar quantities in a laboratory setting.
Procedures:
1. Measure the mass of 91.00mL of H2O. Record.
2. Determine the mass of a piece of chalk, CaCO3 in grams. Write your name and find the new mass of the chalk.
3. Mass 52.0g of sugar, C12H22O11. This is the amount of sugar in Sunkist orange soda.
4. Mass a balloon. Blow it up and find the new mass. (You may need to use tape to hold the balloon on the balance. Don’t forget to subtract the mass of the tape.)
5. Find the mass of a piece of gum still in the wrapper. Chew it for one minute. Place the gum on the wrapper and find the new mass. Chew it for another minute. Find the new mass.
Data Table:
Mass of 91.00mL of H2O:Mass of CaCO3 before: Mass of CaCO3 after:
Mass of sugar in Sunkist:
Mass of balloon before: Mass of balloon after:
Mass of gum before:
Mass of gum after 1 minute:
Mass of gum after 2 minutes:
Data analysis: Show all work to receive full credit.
1. How many moles of H2O are in 91.00mL of H2O? You need 64 oz of water each day. Find out how many moles of water you should drink every day.
2. Determine how many molecules of CaCO3 were used to write your name?
3. How many moles are in 52.0g of sugar?
4. Hi-C fruit drinks are about 8.0% sugar by mass. Find the mass of sugar in 250g of Hi-C. (Ex. 110g of juice contains 9.0% sugar by mass. How much sugar is in the juice? 110g x .090 = 9.9g of sugar ). How many moles of sugar are in a Hi-C drink?
5. What is the volume of hot air, CO2, that you captured inside the balloon?
6. Determine the amount of sugar molecules that are transferred from the gum to you in one minute? In two minutes?
BONUS:
1. How many atoms are there in 52.0g of sugar?
2. Why was the CO2 not totally accurate in the balloon?
3. How many molecules of O2 could be produced from your name in chalk?