Cards in this guide (15)
Which phase has the highest entropy
A cat with two kittens are sleeping or A cat with two kittens is sleeping.
'with two kittens' describe the cat. So, you should write 'is
sleeping'. But if you mean that all three of them are sleeping,
write 'A cat and his two kittens are sleeping'.
What kind of changes contribute to spontaneity
How does temperature affect the spontaneity of a reaction
if H and S have the same sign the temperature will determine spontaneity
What is true of the enthalpy value of an intermediate reaction
It is multiplied by 2 if the intermediate reaction is multiplied
by 2
Which of the following is a statement of Hess's law
The enthalpy of reaction does not depend on the steps taken in
the reaction.(Apex)
What most determines the entropy of a solid
The crystalline structure of the solid most determine the
entropy of a solid.
What statement describes the potential energy diagram of an exothermic reaction
The potential energy of the reactants is greater than the
potential energy of the products.
Which statements describes a difference between the mechanics of airplane flight and rocket flight
rockets need only upward thrust as a force for flight
What chemical reaction describes where energy is absorbed
You think probable to an endothermic chemical reaction.
How is Hess's law used to measure enthalpy of desired reaction
Intermediate equations with known enthalpies are added together
Describe energy in an exothermic reaction
An exothermic reaction gives out energy (the reactants heat up)
as the reaction proceeds.
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
Would form a spontaneous reaction at 298k
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.
