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
blsea [12.9K]
3 years ago
10

A student made a sketch of a potential energy diagram to represent an endothermic reaction.

Chemistry
1 answer:
loris [4]3 years ago
6 0

Answer:

Incorrect

Explanation:

X is the reactants

Y is the products

In an endothermic reaction where energy is absorbed, the enthalpy the products (Y) is always higher than the enthalpy of the reactants (X).

Enthalpy change (∆H) = products (Y) - Reactants (X)

For an endothermic reaction, the ∆H value should be positive.

Enthalpy change

The diagram sketched by the students shows the opposite. The diagram shows that the enthalpy of the products (Y) is lower than the enthalpy of the reactants (X). This will give a negative value of ∆H.

It represents an exothermic reaction rather than endothermic.

Therefore, the student is incorrect.

You might be interested in
Why can't we use chromatography paper to separate different colored pencils?
Sveta_85 [38]
Chromatography is a way of separating a mixture of chemicals which are in gas or liquid form.  when the paper absorbs the liquid, the different colours from the colouring pencils will not be separated because they are insoluble solid pieces,also because they are solid the colours will not be able to creep up the paper which is why chromatography can not be used to separate different coloured pencils. 
3 0
3 years ago
Oxygen, with an atomic number of 8, is a neutral atom and would have ___________ electrons in the first electron shell and _____
motikmotik
2 in the first shell and 6 in the second
8 0
3 years ago
According to periodic table which elements has seven valence electrons
kondaur [170]
Halogens have seven valence electrons and reqires one more electron to complete its octet
7 0
3 years ago
If a precipitation reaction occurs, what will be the products of the unbalanced
levacccp [35]

Answer:

{ \sf{B.  \: AgCl _{(s)}  + NaNO _{3(aq)}}}

Explanation:

Silver chloride precipitates out because it has a low value of Ksp.

7 0
3 years ago
Which equation or rule can be used to estimate the pseudo-critical properties of mixtures based on the pure-component critical c
sveticcg [70]

Answer:

c. Kay's rule

Explanation:

Kay's rule -

The rule is used to determine the pseudo reduced critical parameters of mixture , with the help of using the critical properties of the components of a given mixture .

The equation for Kay's rule is as follows ,

PV = Z RT

Where Z = The compressibility factor of the mixture .

Hence from the given options , the correct answer is Kay's rule .

5 0
3 years ago
Other questions:
  • What are three other elements that have 8 valance electrons.
    9·2 answers
  • What type of compound does the formula, CO2, represent?<br> a. ionic salt<br> b. covalent molecule
    5·2 answers
  • A chemical formula is an expression used to represent
    9·1 answer
  • Which of the following is an example of improved functioning as related to the benefits of muscular strength and endurance train
    5·2 answers
  • Slaked lime (Ca(OH)2) is formed from quicklime (CaO) by the addition of water. What mass of slaked lime can be produced from a m
    8·1 answer
  • Forensic science has been decreasing in popularity as a profession over the last ten years. OA True False​
    10·1 answer
  • When it is exposed to sunlight, silver chloride breaks down into silver and chlorine. What is the correct equation for this deco
    9·1 answer
  • In volcanic areas, groundwater heated by magma is a source of
    8·1 answer
  • PLZ HELP I WILL GIVE BRAINLY AND 50 POINTS
    14·2 answers
  • Which of these would have the lowest boiling point?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!