Chem Final Review-
15 QuestionsGet out…
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Question #1• What is the mass of 3.5 moles
of Cu(NO3)2?
Molar mass = 187.5
3.5 x 187.5 = 656.25
Question #2• What mass of NaF would be
made from 42.1 L of F2 gas at STP?
2Na + F2 2NaF
42.1L / 22.4 L x 2 mol NaF x 42g =
158g
Question #3• Balance this equation:__ NaCl +__Cu __CuCl2 +
__Na2_ NaCl +__Cu __CuCl2 + 2_Na
Question #4• What type of reaction is this?
2 NaCl + Cu CuCl2 + 2 Na
Single Replacement
Question #5• Using this balanced equation,
2 NaCl + Cu CuCl2 + 2 Na
If you had 50g of Cu and 25g of NaCl, which would be the limiting reactant?
• Convert massmolmol Na for each• The one which makes the least Na is the limiting
• 50g Cu makes 1.57 mol Na• 25g NaCl makes 0.43 mol Na• NaCl is limiting
Question #6• Use Collision Theory to explain WHY
heating up a reaction causes it to occur faster (2 reasons)
Particles move faster so…
•Hit more often and•Hit with more energy
Question #7CaCO3(s) + HCl(aq) CaCl2(aq) + H2O(l) + CO2(g)
What would happen to this graph if the CaCO3 was ground finely?
Question #8• Name this organic compound
using IUPAC rules
C – C – C = C – C
2-pentene
Question #9• 2-Butene + HBr →
2-Bromobutane
Question #10• Write a balanced chemical
equation for the reaction between aluminum and chlorine.
2 Al + 3 Cl2 2 AlCl3
Question #11• What would you see if you
added solid calcium carbonate to hydrochloric acid?
• Write the balanced equationBubblesCaCO3 + 2 HCl CaCl2 + H2CO3 H2O + CO2
Question #12• Name some general
properties of basesBitter tastingIn cleaners
pH > 7[H+] < 1 x 10-7
Feel slipperyFormulas end with OH or CO3
Pink in phenolphthaleinBlue/purple in U.I.
Question #13• Name this:• C – C – C – C – C – C – C = C
l l Cl C
7-chloro-5-methyl-1 octene
Question #14• Calculate the pH of a solution
with a [OH-] of 1.2 x 10-10
2 ways…1.[H+] = 1x 10-14/[OH-] = 8.3 x
10-5 Then, pH = -log[H+] = 4.1
2.pOH = -log[OH-] = 9.9 Then, pH = 14-pOH = 4.1
Question #15• Why are saturated fats more
unhealthy?
(1)They remain solid at room/body temp
(2)So… they build up in your body• Clogging arteries• Making blood platelets sticky• Increasing bad cholesterol
Good Luck!