WCU Chemistry Worksheet

CHEM280 Lab Quiz #6 Name Kaytlin De los santos1. Given the nuclear reactions below fill in the missing species.
→ He+ ²28Ra
88
289 Fl⇒ je+
114¹
293 He → He+
1164
→He+20Bi
834
2. Complete the titration calculations shown below.
It took 22.5 mL of 0.4 M HF to completely neutralize 8.9 mL of NaOH. What is the concentration of
NaOH?
Hydrobromic acid when titrated with potassium hydroxide forms water and potassium bromide. It took
a total of 1.8 L of 2.6 M potassium hydroxide in order to neutralize 0.7 L of the hydrobromic acid. What
is the concentration of hydrobromic acid?B)
TABLE 18.7 Functional Groups
Family
HO
alcohols
OH
ethers
aldehydes
ketones
carboxylic
acids
esters
A) Ala-Phe-Leu-Gly
amines
CH₂OH
General Formula
R-OH
R-O-R
OH
R C-H
R
Q=0
Q1O
R CIOH
O=
R C-OR
R
R-N-R
Condensed
General Formula
D)
ROH
ROR
RCHO
RCOR
RCOOH
RCOOR
R3N
C)
Example
CH3CH₂-OH
CH3 CH3
H₂C C-H
110
H₂C C-CH3
H
910
H3C-C-OH
O=C
H3C- C-OCH3
H3CH₂C NH
3. Label the molecules below into the appropriate class of molecule (carbohydrate, lipid, protein, nucleic
acid)
H
T
H
OH
Name
O OH
O
-O-P-O-CH₂
Byte
H
ethanol (ethyl alcohol)
dimethyl ether
OH
ethanal (acetaldehyde)
propanone (acetone)
ethanoic acid (acetic acid)
methyl acetate
ethyl amine
H
NM₂