Question 1

An elderly person comes to you on a winter day with blue fingers and toes,sluggish movement,and slurred speech.What condition do they most likely have?
A) hyperthermia
B) hypothermia
C) heat exhaustion
D) none of the choices

Accepted Answer

The person is showing signs of hypothermia, which occurs when the body temperature drops below the normal range. The blue fingers and toes are due to reduced blood flow to the extremities, sluggish movement is a result of slowed metabolic processes, and slurred speech is due to reduced brain function.

Question 2

What would be the effect of doubling the pressure on the following equilibrium system? N₂(g)+ 3F₂(g) 2NF₃(g) A) Shift it to the right. B) Shift it to the left. C) Will have no effect. D) Will be impossible to predict.

Accepted Answer

The answer of What would be the effect of doubling...

Question 3

For the following reaction,which of the given changes will increase the value of the equilibrium constant?
AB + CD 
AD + BC + heat
A) decreasing the temperature
B) adding AB to the reaction
C) removing CD from the reaction
D) All of these changes will increase K.

Accepted Answer

The answer of For the following reaction,which of the given...

Question 4

For the following energy diagram,which letter represents the catalyzed activation energy? 
A) A
B) B
C) C
D) D

Accepted Answer

The answer of For the following energy diagram,which letter represents...

Question 5

Which of the following is the proper equilibrium expression for the reaction shown below?
2A + B 
C + heat
A)

B)

C)

D)

Accepted Answer

The answer of Which of the following is the proper...

Question 6

Based on the following equilibrium constants,which reaction essentially goes to completion? 1)81 * 10⁰ A) 1 B) 2 C) 3 D) 4

Accepted Answer

The answer of Based on the following equilibrium constants,which reaction...

Question 7

Which of the following would be the equilibrium expression for the system given below? N₂(g)+ 3F₂(g) 2NF₃(g) A) B) C) D)

Accepted Answer

The answer of Which of the following would be the...

Question 8

A doctor has given your patient a prescription of a common amphetamine.What should the patient avoid when taking this medication?
A) exercise
B) fruit juices
C) alcohol
D) none of the choices

Accepted Answer

Patients should avoid consuming alcohol when taking amphetamines as it can increase the risk of side effects such as dizziness, drowsiness, and impaired judgment.

Question 9

A process that gains or accepts energy as it takes place is a(n)_____ .
A) exergonic process
B) spontaneous process
C) endergonic process
D) all of these

Accepted Answer

An endergonic process is one that gains or accepts energy as it takes place. Exergonic processes release energy, and spontaneous processes occur without the input of energy, so neither of those descriptions fit the definition given. Therefore, the correct choice is C.

Question 10

Ice has a(n)____ entropy than that of liquid water.
A) lower
B) equal
C) higher
D) can not tell

Accepted Answer

Ice has a lower entropy than liquid water because in its solid form, water molecules are arranged in a more ordered structure compared to the more random and disordered arrangement of molecules in liquid water.

Question 11

If we add a catalyst to the following equation,which way will the equilibrium shift? CO + H₂O + heat CO₂ + H₂ A) to the left B) will have no effect C) to the right D) not enough information.

Accepted Answer

The addition of a catalyst does not affect the equilibrium position of a reaction, as it only increases the rate of both forward and reverse reactions equally.

Question 12

If we remove CO₂ from the following equation,which way will the equilibrium shift? CO + H₂O + heat CO₂ + H₂ A) to the left B) will have no effect C) to the right D) not enough information

Accepted Answer

The answer of If we remove CO₂ from the following...

Question 13

The device used to measure heat produced or used by a chemical reaction is called a(n)_____ .
A) thermometer
B) calorimeter
C) activator
D) joulery

Accepted Answer

A calorimeter is the device used to measure the heat produced or used by a chemical reaction. A thermometer is used to measure temperature, an activator is a substance or agent that initiates a chemical reaction, and joulery is not a commonly known term in relation to chemical reactions.

Question 14

The equilibrium constants for a series of reaction of the general type: AB+CD AD+BC were measured and are shown below. In which reaction is the concentration of the products the largest at equilibrium? A)3.5×10³ B)5.7×10^-2 C)0.011 D)1.2

Accepted Answer

The answer of The equilibrium constants for a series of...

Question 15

Which of the following is NOT true regarding a chemical reaction?
A) All matter is considered to be composed of tiny particles.
B) All particles contain potential energy,measured by constant motion.
C) Particle speed always increases with rising temperature.
D) Colliding particles will transfer energy with no loss in system energy.

Accepted Answer

The answer of Which of the following is NOT true...

Question 16

A room filled with a 2:1 mixture of hydrogen and oxygen gases can be safely inhaled.However,with a single spark,it can react explosively.Since the explosion would be considered a spontaneous process,what did the spark provide?
A) endothermic energy
B) exothermic energy
C) free energy
D) activation energy

Accepted Answer

The spark provided activation energy, which is the minimum amount of energy required for a chemical reaction to occur. In this case, the spark provided the energy needed for the hydrogen and oxygen gases to react explosively. Choice A is incorrect because endothermic energy is energy that is absorbed during a reaction, while the spark provided energy to initiate the reaction. Choice B is incorrect because exothermic energy is energy that is released during a reaction, not energy that is required to initiate the reaction. Choice C is incorrect because free energy is a measure of the amount of energy available to do useful work, and does not directly relate to the initiation of a chemical reaction.

Question 17

The following reaction is observed in a lab experiment: A + 2B $\rarr$ C + D
In this experiment,it required 750 s for the concentration of C to change from 0.333 M to 0.750 M.What is the rate of the reaction?
A)

B)

C)

D)

Accepted Answer

The answer of The following reaction is observed in a...

Question 18

A patient complains about having painful muscle spasms after working on a very hot day.The patient's skin is moist and cool,heart rate is near normal as well as his/her body temperature.What should you not do for them?
A) get them to a cool place
B) give them a caffeinated drink
C) sponge them with cool water
D) encourage them to lie down and rest

Accepted Answer

Giving a caffeinated drink can worsen the symptoms as caffeine is a diuretic and increases the risk of dehydration, which can cause muscle cramps. It is important to give them fluids that are hydrating, such as water or electrolyte solutions. Choices A, C, and D are appropriate measures to take to relieve the patient's symptoms, as they will help lower the patient's body temperature and rehydrate them.

Question 19

Consider the following energy diagram.Which letter represents the activation energy for the forward reaction? 
A) A
B) B
C) C
D) D

Accepted Answer

The answer of Consider the following energy diagram.Which letter represents...

Question 20

Based upon the energy diagram given below,which letter represents the enthalpy for the reaction? 
A) A
B) B
C) C
D) D

Accepted Answer

The answer of Based upon the energy diagram given below,which...

Quiz 8: Reaction Rates and Equilibrium

An elderly person comes to you on a winter day with blue fingers and toes,sluggish movement,and slurred speech.What condition do they most likely have?

What would be the effect of doubling the pressure on the following equilibrium system? N₂(g) + 3F₂(g) 2NF₃(g)

For the following reaction,which of the given changes will increase the value of the equilibrium constant? AB + CD AD + BC + heat

For the following energy diagram,which letter represents the catalyzed activation energy?

Which of the following is the proper equilibrium expression for the reaction shown below? 2A + B C + heat

Based on the following equilibrium constants,which reaction essentially goes to completion? 1) 81 * 10⁰

Which of the following would be the equilibrium expression for the system given below? N₂(g) + 3F₂(g) 2NF₃(g)

A doctor has given your patient a prescription of a common amphetamine.What should the patient avoid when taking this medication?

A process that gains or accepts energy as it takes place is a(n) _____ .

Ice has a(n) ____ entropy than that of liquid water.

If we add a catalyst to the following equation,which way will the equilibrium shift? CO + H₂O + heat CO₂ + H₂

If we remove CO₂ from the following equation,which way will the equilibrium shift? CO + H₂O + heat CO₂ + H₂

The device used to measure heat produced or used by a chemical reaction is called a(n) _____ .

The equilibrium constants for a series of reaction of the general type: AB+CD AD+BC were measured and are shown below. In which reaction is the concentration of the products the largest at equilibrium?

Which of the following is NOT true regarding a chemical reaction?

A room filled with a 2:1 mixture of hydrogen and oxygen gases can be safely inhaled.However,with a single spark,it can react explosively.Since the explosion would be considered a spontaneous process,what did the spark provide?

The following reaction is observed in a lab experiment: A + 2B $\rarr$ C + D In this experiment,it required 750 s for the concentration of C to change from 0.333 M to 0.750 M.What is the rate of the reaction?

A patient complains about having painful muscle spasms after working on a very hot day.The patient's skin is moist and cool,heart rate is near normal as well as his/her body temperature.What should you not do for them?

Consider the following energy diagram.Which letter represents the activation energy for the forward reaction?

Based upon the energy diagram given below,which letter represents the enthalpy for the reaction?