1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ICE Princess25 [194]
3 years ago
9

The table shows the thermodynamic data for a reaction. Thermodynamic Data Energy of the Reactants Energy of the Products Activat

ion Energy 160 kJ 370 kJ 260 kJ Which of the following statements explains if the reaction is endothermic or exothermic? The activation energy is lower than the change in enthalpy, so it is an exothermic reaction. The activation energy is higher than the change in enthalpy, so it is an endothermic reaction. The change in enthalpy is −210 kJ, so it is an exothermic reaction. The change in enthalpy is +210 kJ, so it is an endothermic reaction.

Chemistry
2 answers:
NNADVOKAT [17]3 years ago
7 0

Answer:

The change in enthalpy is +210 kJ, so it is an endothermic reaction.

Explanation:

  • The change in enthalpy shows that the reaction is exothermic or endothermic.

The change in enthalpy = The energy of products - the energy of reactants.

  • If ΔH is positive value, the reaction is endothermic, the energy of the products is higher than that of the reactants.
  • If ΔH is negative value, the reaction is exothermic, the energy of the products is lower than that of the reactants.

<em>For this reaction: </em>The change in enthalpy = The energy of products - the energy of reactants = 370 kJ - 160 kJ = + 210 kJ.

<em>So, the right choice is: The change in enthalpy is +210 kJ, so it is an endothermic reaction.</em>

BartSMP [9]3 years ago
4 0

Answer:

The change in enthalpy is −220 kJ, so it is an exothermic reaction. (B)

Explanation:

If Your on Question 10 of (07.01 MC)

That should be the answer.

You might be interested in
1. Related to the number of particles in a gram of
Romashka-Z-Leto [24]

Answer:

Avogadro's number or Avogardro’s constant

Explanation:

I’m pretty sure this is correct if it’s not I’m sorry lol.

6 0
1 year ago
Write and label the density triangle
Slav-nsk [51]

Answer:

It is basically a way of telling you how to solve for different variables in the equation d=m/v

Explanation:

8 0
3 years ago
What is the ph of a 0.0055 m ha (weak acid) solution that is 8.2% ionized?
Trava [24]
Answer is: pH value of weak is 3.35.
Chemical reaction (dissociation): HA(aq) → H⁺(aq) + A⁻(aq).
c(HA) = 0.0055 M.
α = 8.2% ÷ 100% = 0.082.
[H⁺] = c(HA) · α.
[H⁺] = 0.0055 M · 0.082.
[H⁺] = 0.000451 M.
pH = -log[H⁺].
pH = -log(0.000451 M).
pH = 3.35.
pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity <span>an aqueous solution.</span>
3 0
3 years ago
What type of bond would form between two atoms of selenium? A. Double ionic bond B. Single ionic bond C. Single covalent bond D.
kirill115 [55]

The corret answer is D

3 0
3 years ago
This table shows the densities of a sample of substances.
Arisa [49]
When placed in a container, the heaviest (most dense) will sink to the bottom and the lightest (least dense) will rise to the top.
Therefore, Gasoline would rise to the top.
3 0
3 years ago
Other questions:
  • Why Formaldehyde is more reactive than Acetaldehyde?
    6·1 answer
  • In the presence of dry sulfuric acid at 100 degree c, salicylic acid can react with itself to form a water-insoluble precipitate
    12·1 answer
  • Outer core made of alloy metal, mostly
    12·1 answer
  • If the temperature remains constant, an increase in pressure will
    8·2 answers
  • How many valence electrons do alkali metals have?
    15·1 answer
  • HELPPPPP PLEASSEEEEE
    10·1 answer
  • Which of the following affects the speed of a seismic wave?
    5·1 answer
  • Calculate the pressure in Pascals when a box with a weight force of 294 Newtons is placed on its base which measures 24cm by 12c
    14·1 answer
  • What is Sublimation!?​
    7·1 answer
  • What is a host? Give two examples of ways humans serve as hosts for infectious diseases.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!