double jeopardy heatreactionsgas lawsmolaritystoich 200 400 600 800 1000 compliments of the james...
TRANSCRIPT
Double JeopardyHeat Reactions Gas Laws Molarity Stoich
200 200 200 200 200
400 400 400 400 400
600 600 600 600 600
800 800 800 800 800
1000 1000 1000 1000 1000
Compliments of the James Madison Center, JMU
The unit heat is measured in.
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What are J (Joules) or Calories?
The variable for heat.
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What is Q?
The 3 things you need to knowTo calculate heat.
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What are specific heat, mass, and temperature change?
A 150 g sample of Al absorbs3500 cal of energy. If the specificheat = 0.212, the temp change is...
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What is 110 degrees Celsius?
The starting temp of a piece of AlIs 25 ºC. If it loses enough energyTo cause a 55 ºC change in temp, The new temp is…
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What is -30 ºC?
The type of reaction in which 1 reactant breaks down into 2.
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What is Decomposition?
The 2 products of all combustionreactions.
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What are CO2 and H2O?
The products of a Neutralization reaction are:
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What are a salt and water?
Balance the following reaction:
__C4H10 + __O2 __CO2 + __H2O
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2, 13, 8, 10
Write, finish and balanceThe following reaction:__HCl + __ Al
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6 HCl + 2 Al 2 AlCl3 +3 H2
n in the equation PV=nRT stands for this:
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What are moles?
The variable R in PV=nRT standsFor this: (not the #... what it is)
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What is the Universal gas law constant?
35 ºC is equal to ____ ºKelvin.
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What is 308 K?
In our room where the temp is 25 ºC and the pressure is 0.95 atm, a gas occupies 1.55 L of space. What volume will it occupy at STP?
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What is 1.35 L?
Determine the mass of NO2 gas contained in 5.5 L at 20 ºC and 1.5 atm.
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What is 15.8 grams?
Another word for Molarity:
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What is concentration?
How many moles of nitric acidAre in 25 mL of a 3.5 solution?
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0.0875 moles
How many grams are in 57 mL of a 1.5 M calcium chloridesolution?
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9.5 grams
Zinc reacts with 25 mL of 4.0 MNitric acid. How many moles of Znwill react? (Write reaction first!)
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0.05 moles of Zn.
If you have 25 mL of 1.5 HCl and15 mL of 2.1 M Ca(OH)2, what is thelimiting reactant and how many molesof each do you have? (write reaction first!)
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HCl is LR, HCl=.0375, Ca(OH)2 =.0315
What is the mole ratio between H2 and O2 in the following rxn? 2 H2 + O2 2 H2O
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2 : 1
If you start with 25 g of H2, how many moles of O2 will you need? 2 H2 + O2 2 H2O
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6.25 moles O2
If you start with 12.5 g of O2, howmany g of H2O will be made? 2 H2 + O2 2 H2O
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14.1 grams H2O
If you start with 12.5 grams of both calcium chloride and sodiumcarbonate, what is the limiting reactant? (Show your work and writereaction first!)
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calcium chloride, 0.113 moles
How many grams of O2 are neededto combust 25 g of C2H4. (Writeand balance reaction first!)
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85.7 g of O2.