Classifying Chemical Reactions

Classifying Chemical Reactions

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Multiple Choice

In the nuclear equation below, calculate the mass number of the alpha particle. 
^238₉₂U-->^234₉₀Th + ^4₂He + 2^0₀

• 238
• 0
• 234
• 4

Multiple Choice

dinitrogen pentoxide

• N₂O₅

• NO₅

• N₅O₂

• N₂O₆

Multiple Choice

phosphorus trichloride

• KCl₃
• PCl₃
• K₃Cl
• P₃Cl

Multiple Choice

In a chemical equation, is it true that -

• the reactant side and product side can have different numbers of atoms for each element
• there can be different elements on the reactant side and the product side
• an element or compound must be accompanied by a phase change
• the coefficients indicate the number of molecules of each reactant used and the number of molecules of each product made

Multiple Choice

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Multiple Choice

2 C₅H₅ + Fe --> Fe(C₅H₅)₂ 

• single displacement
• double displacement
• decomposition
• synthesis

Multiple Choice

A + BC →B + AC

• Single Replacement
• Decomposition
• Double Replacement
• Synthesis

Multiple Choice

2 RbNO₃ + BeF₂ --> Be(NO₃)₂ + 2 RbF

• single displacement
• double displacment
• decomposition
• synthesis

Multiple Choice

Identify this type of reaction,
Cl₂ + 2KI _-->  I₂ + 2KCl

• Synthesis
• Single displacement
• Double displacement
• Decomposition

Multiple Choice

Solve the proportion:

• 4
• 8
• 14
• 10

Multiple Choice

How many gallons are in a pool that holds 758,000 Liters?
(1 gallon = 3.79 Liters)

• 200
• 20,000
• 200,000
• 2,000,000

Multiple Choice

Convert 3.5 gallons into cups. (1gal = 16cups)

• 56 cups

• 0.21875 cups

• 19.5 cups

• 48 cups

Multiple Choice

Calculate the molar mass of CO₂.

• 14 g/mol

• 28 g/mol

• 36 g/mol

• 44 g/mol

Multiple Choice

What id the molar mass of UF₆?

• 101 g/mol

• 238 g/mol

• 257 g/mol

• 352 g/mol

Multiple Choice

What is the molar mass of Cl₂?

• 17 g/mol

• 35.5 g/mo;

• 71.0 g/mol

• 89 g/mol

Multiple Choice

What is the molar mass of Mn₂Se₇?

• 134 g/mole
• 663 g/mole
• 189 g/mole
• 608 g/molw

Multiple Choice

How many grams are in 88.1 moles of magnesium?

• 2141 g
• 0.3 g
• 30 g
• 3.6 g

Multiple Choice

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

Multiple Choice

How many moles are in 9.8 grams of calcium? 

• 0.2 moles
• 4.1 moles
• 1 mole
• 392 moles

Multiple Choice

How many moles are in 15 grams of lithium?

• 0.5 moles
• 104.1 moles
• 2.2 moles
• 50 moles

Multiple Choice

How many moles are in 22 g of argon? 

• 880 moles
• 0.55 moles
• 1.81 moles
• 5 moles

Multiple Choice

A mass of 6 g of Carbon contains

• 1 mole of C
• 2 moles of C
• 0.5 moles of C
• 72 moles of C

Multiple Choice

4.0 moles of H₂O would have what mass?

• 72 g
• 23 g
• 68 g
• 4.5 g

Multiple Choice

36.0 g of Be contains how many moles?

• 0.25 mol
• 4.0 mol
• 45 mol
• 320 mol