MOLARITY OF A
CARROT
Before Monday you need to have this done
TITLE
INTRODUCTION
What Chem (&Bio) principles are being tested?
HYPOTHESIS
What will happen to the carrots? (4 of them
one for each solution)
PRELAB
PG 347
LAB SETUP
• Groups of 4-5 ppl
• Use the blue/green cups
– The top ridge is 400mL
• USE A WEIGHBOAT
– NO chemicals directly on the scales!!
• Don’t forget your DAY 1 data
• Where to put them?
– Per 1: By the “STATION 2” sign
– Per 2: By the “STATION 4” sign
• HW: work on lab write up (thru results table)
MATERIALS
PROCEDURES
- HOW did you make up the 4 sol’ns?
- WHAT are you doing with those sol’ns?
RESULTS
- Create your own data table
CONCLUSION
Answer the questions here
Double Check Your Math
400mL of a 0.5M NaCl solution:
0.5M = x mol
0.4L
= 0.2mol of NaCl
(0.2mol)(58.44g/mol) = 11.69g
DAY 2
• Get your “Day 2” measurements
– Clean up your mess
– Rinse out cups and turn upside down to dry
– Throw your carrots away
• Work on your lab write up