Quiz 4C Score__________
1. What is meant by "limiting reactant?"
C6H12O6 + 6 O2 ( 6 H2O + 6 CO2 + energy
2. Two glucose molecules (C6H12O6) would produce how many carbon dioxides?
3. If there were five glucose molecules and eighteen oxygen molecules, which would be the limiting reactant?
4. Given the reactant amounts in number 3, how much of the excess reactant is leftover after the reaction takes place?
5. What is a trace mineral, in regards to human need?
6. What is the monomer in a protein?
7. How many different monomers are there for humans?
8. What two functional groups do all of these monomers have?
9. What is the difference between a dipeptide and a tripeptide?
10. In the Gravimetric Analysis lab, why should you not overfill the funnel? (I am not asking about overflowing, but overfilling.)
11. Why must the precipitate be completely dry?
12. Mass of empty beaker: 55.40 g
Mass of filter paper: 0. 30 g
Mass of beaker, fp, and ppt: 57.36 g
Calculate the following:
a. What mass of precipitate was there?
b. If the precipitate has the formula SrCO3, how many moles were formed?
| Questions? Comments?? Eric Johnson Kennebunk High School |
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