# 6-13-17 Review Reaction Rates and Equilibrium / Final Review

6-13-17 Review Reaction Rates and Equilibrium / Final Review Do Now: Final Review materials...Questions ???

Agenda: Go over Stuff! Review Announcement: AP summer assignments: Env. C307, Physics 1 C209 (Absolute Zero? ) Homework: Study / Practice

6-13-17 Last day of class before final!! Do Now: Please take out your final exam topic list and get ready to ask me specific questions.

Agenda: Questions? Review Game Homework: Study for your final REMEMBER TO BRING #2 PENCIL,

CALCULATOR AND TEXT BOOK!!!! Calculate the empirical formula of a compound that contains: 25.9 % N, 74.1%O

Calculate the empirical formula of a compound that contains: 67.6%Hg, 10.8% S, 21.6% O MAVA = MBVB

Final Exam Review What 3 things should you bring to class on final exam day?

What 3 things should you bring to class on final exam day? #2 pencil Calculator Textbook

What is the percent mass of Carbon in carbon dioxide? Answer 27%

What is used to measure volume accurately in the lab? What

type of elements tend to lose electrons in a chemical reaction? Calculate the empirical

formula of a compound that contains: 25.9 % N, 74.1%O Give

an example of a quantitative observation. List

2 ways to increase the rate of a reaction. Name

a substance that cannot be separated by a physical change. What is the Volume

in mL? What tool is used to measure mass?

How do you convert Celsius to Kelvin?

Write the chemical formula for Aluminum Sulfide. A

gas has a volume of 2.2 L under 95 kPa of pressure. What is the new volume if the pressure is increased to 140 kPa?

Write the chemical equation for the combustion of CH4 and balance it.

Answer: CH4 + 2O2 CO2 +2H20

Which group on the periodic table contains the most reactive metals?

What is the density of a metal that has a mass of 33.2 grams and a volume of 6.1cm3? Sig figs count and units! What is the density of a metal

that has a mass of 33.2 grams and a volume of 6.1cm3? Sig figs and units count! Answer: 5.4

g/cm 3 State

the Law of Conservation of Matter Which element has the largest atomic radius?

Na, K, or Cs Which

of the following is not conserved in a chemical reaction? A. Energy B. Atoms C. Mass

D.Moles What is the maximum number of electrons in the 5th energy level?

Answer: 50 2n2 n= principal energy level So, 2(5)2 = 2 x 25 = 50

What is the electron configuration for Iron?

Answer: (26 electrons) 2 part question: How many liters are equal to 245 mL? How many cm3 is this?

What is the shape of a water molecule?

Why do ionic compounds conduct electricity when dissolved in water.

Balance the following equation Al + Br2

2Al+ 3Br2 2AlBr3 How many molecules are there in 2.3 moles of CO2?

How many molecules are there in 2.3 moles of NaCl? Answer: 2.3 x 6.02 x 1023 1.4 x 10

24 What is molarity? Rank the following from

highest electronegativity to lowest: Li, Cs, F, N

Rank the following from highest electronegativity to lowest: Answer:

F, N, Mg, Li, Cs Give an example of a metalloid. What is the name of this

compound: CuS? Which group of elements is the least reactive?

What is the chemical formula for: Ca

2+ and PO4 3-

What is the chemical formula for: Ca 2+

3- What mass of MgCl2 is needed to prepare a 1.0M, 500mL solution?

What mass of MgCl2 is needed to prepare a 1.0M, 500mL solution? Answer:

1.0M = 1 mole / liter 1 mole of MgCl2= 24 + 70 = 94 grams 94g x 1mol x 1 L x 500mL = 47 grams mol

Liter 1000mL How do you calculate percent yield?

Convert 2.3 grams of H2O to moles. Convert 2.3 grams of H2O to moles.

Answer: 2.3 grams x 1mol H2O= 0.13 mol

18 grams What is the oxidation number of phosphorus? Name

2 ways you can increase the rate that a salt will dissolve in water. A

substance has a pH of 12, is it an acid or a base? If each diagram was originally the same solution,

What is the percent mass of carbon in carbon dioxide? What is the percent mass of carbon in carbon dioxide? Answer:

27% How many atoms of Copper are there in 32 grams of Copper?

How many atoms of Copper are there in 32 grams of Copper? Answer: 3.01

x 1023

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