Mole Day Chemistry

Chemistry i Final Exam Review Part 2

By llanham summitt

Use your resources to help you with this part of the review and exam. You will need your periodic table, charts, and calculator.

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​There is change in everything around us.

​Millions of chemical reactions in and around you transform reactants into products, resulting in the absorption or release of energy. In this part of the review you will be working on the equations and stoichiometry of chemistry.

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Multiple Choice

The total number of oxygen atoms indicated by the formula Fe₂ (CO₃)₃ is

• 12

• 6

• 9

• 3

• 18

Multiple Choice

The correct name for LiCl is

• lithium monochloride

• lithium chloride

• lithium I chloride

• monolithium monochloride

Multiple Choice

The correct name for FeO is

• iron III oxide

• iron II oxide

• iron monoxide

• iron I oxide

Multiple Choice

Which of the following is NOT the correct chemical formula for the compound named?

• calcium sulfate             CaSO₄

• beryllium oxide BeO

• ammonium chromate    (NH₄)₂CrO₄

• lead(II) dinitrate Pb(NO₃)₂

Multiple Choice

The correct formula for the ammonium ion is

• NH4

• N4H+

• NH4+

• Am+

Multiple Choice

The carbonate ion has the formula CO₃^2-. What is the correct formula for sodium carbonate?

• Na(CO₃)₂

• Na₂(CO₃)₂

• Na₃(CO)₂

• Na₂CO₃

Multiple Select

Which element or ion listed below has the electron configuration 1s²2s²2p⁶3s²3p⁶? Choose all that apply.

• Ca2+

• Cl

• Br

• Ar

Multiple Choice

A phosphorus atom needs to gain _____ electrons to achieve a noble gas configuration and has an oxidation number of ______

• 5, -3

• 3, -3

• 3, -5

• 3, +5

Multiple Choice

What coeffiecient could be added in fron of the silver (Ag) reactant to balance the equation:

$$\ldots Ag\ +\ H_2S\ \rightarrow\ Ag_2S\ +\ H_2$$  

• 2

• 3

• 4

• none

Multiple Choice

Sodium reacts with chlorine to produce sodium chloride (table salt). Which of the equations below is the proper balanced equation?

• $$Na\ +\ Cl\ \rightarrow\ NaCl$$  

• $$Na\ +\ Cl_2\ \rightarrow\ 2NaCl$$  

• $$Na\ +\ Cl_2\ \rightarrow\ NaCl$$  

• $$2Na\ +\ Cl_2\ \rightarrow\ 2NaCl$$  

Multiple Choice

Methane and oxygen react in a combustion reaction releasing carbon dioxide. Complete the balanced equation.

$$CH_4\ +\ 2O_2\ =>\ CO_2\ \ +\$$  

•   $$CH_4+2O_2\ =>\ CO_2\ +H_2$$  

• $$CH_4+2O_2=>CO_2\ +2H_2O\$$  

• $$2CH_4+2O_2=>CO_2\ +4H_2+CO$$  

Multiple Choice

Which of the following is a synthesis reaction?

• $$2Mg\ +\ O_2\ \rightarrow\ \ 2MgO$$  

• $$2Al+6HCl\rightarrow2AlCl_3\ +3H_2$$

• $$2ZnS+3O_2\rightarrow2ZnO+2SO_2$$  

• $$PCl_5\ \rightarrow\ PCl_3\ +Cl_2$$  

Multiple Choice

Which of the following is a single replacement reaction?

• $$2Mg\ +\ O_2\ \rightarrow\ \ 2MgO$$  

• $$2Al+6HCl\rightarrow2AlCl_3\ +3H_2$$

• $$Na_2S+2HCl\rightarrow2NaCl+H_2S$$

• $$PCl_5\ \rightarrow\ PCl_3\ +Cl_2$$  

Multiple Choice

Which of the following is a double replacement reaction?

• $$2Mg\ +\ O_2\ \rightarrow\ \ 2MgO$$  

• $$2Al+6HCl\rightarrow2AlCl_3\ +3H_2$$

• $$Na_2S+2HCl\rightarrow2NaCl+H_2S$$

• $$PCl_5\ \rightarrow\ PCl_3\ +Cl_2$$  

Multiple Choice

1 mole of water has a mass of _____ grams.

• 6.02 x 10^23

• 18.0

• 1.0

Multiple Choice

What is the molar mass of $$C_4H_{10}$$  , butane?

• 14

• 40

• 58

Relax and get some rest.

Let it sink in. ​

Think about the things you did well on and the things you had a hard time with. ​

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You've got this!

​You Did IT!

Multiple Choice

How many grams are in 3 moles of nitrogen? (N - 14.01 molar mass)

• 14.01

• 4.67

• 6.98x10^-23

• 42.03

Multiple Choice

How many molecules are in 1 mole of sucrose sugar? ( $$C_{12}H_{22}O_{11}$$  )

• 372

• $$6.022\times10^{23}$$  

• $$1.6\times10^{21}$$  

• $$2.2\times10^{26}$$  

Multiple Choice

What percent of $$C_3H_8O\$$  is Hydrogen? (Molecular Mass = 60)

• 60%

• 13%

• 27%