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☆☆☆☆☆Cards in this guide (15)
Where do trees get carbon dioxide
Out of the air. There is a lot of carbon dioxide in the air. You exhale carbon dioxide, because your cells use oxygen and turn it into carbon dioxide.
What kind of changes contribute to spontaneity
An increase in entropy.
How does temperature affect the spontaneity of a reaction
if H and S have the same sign the temperature will determine spontaneity
What most determines the entropy of a solid
The crystalline structure of the solid most determine the entropy of a solid.
How does entropy change in gas reactions
Reactions that increase the moles of gas will increase in entropy.
What is the value for G at 100 K if H equals 27 kJ mol and S equals 0.09 kJ molK
G = 18 kJ/mol
What conditions make G always negative
G is always negative when H is negative and S is positive.
What would happen to the rate of a reaction with rate law kNO2H2 if the concentration of NO were doubled
the rate would be four times larger. apex
What is the value for G at 300 K if H 27 kJmol and S 0.09 kJmolK
G = 0 kJ/mol
How is the H fusion used to calculate the energy released when a mass of liquid freezes
grams liquid x mol/g x H fusion
How is Hess's law used to measure enthalpy of desired reaction
Intermediate equations with known enthalpies are added together
The size of a rocket's cargo determines the amount of thrust the engine must create to carry the rocket into outer space. What is another term for this cargo
Payload (apex)
Would form a spontaneous reaction at 298k
Not B
The combustion reactions inside the engine of a rocket cause a buildup of heat and pressure. When this heat and pressure escapes into the atmosphere, what force is created
Thrust (apex)
An aerospace engineer is designing a rocket to have three stages. Which is not a reasonable explanation for this decision
to simplify the design of the rocket.
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