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
worty [1.4K]
3 years ago
14

Which of the following statements is not true regarding molecular orbital theory? O Bonding molecular orbitals have lower energy

than the atomic orbitals from which they are formed. O Molecular orbitals are formed by the combination of atomic orbitals. Two atomic orbitals combine to form one molecular orbital. O Molecular orbitals are regions of a molecule where the electrons are most likely to be found.
Chemistry
1 answer:
pychu [463]3 years ago
5 0

Answer:

Option c, Two atomic orbitals combine to form one molecular orbital

Explanation:

Molecular orbitals are formed by linear combination of atomic orbitals.

Some of the important facts of molecular orbital theories are as follows:

  • No. of the molecular orbitals formed are equal to the no. of atomic orbitals participated.
  • Half of the molecular orbitals are bonding molecular orbitals and half of the molecular orbitals are anti bonding molecular orbitals.
  • Anti bonding molecular orbitals have energy higher than participating atomic orbitals.
  • Bonding molecular orbitals have energy lower than participating atomic orbitals.
  • Molecular orbitals are that region in the molecule where electrons are most likely to found.

So, among given, option c which is 'atomic orbitals combine to form one molecular orbital' is incorrect.

You might be interested in
[Please see the attatched photo]​
mixer [17]

Answer:

Its C

Explanation:

Got 100% on test edge 2020

5 0
2 years ago
Read 2 more answers
Based on your knowledge of energy conservation, which of the following statements is true?
Julli [10]
C. both a and b

If a light bulb can last longer with the same amount of energy it is given, that means it can use less energy to do the same job compared to one that does not last longer with the same amount of energy it is given. It is much like how a more fuel efficient car will be able to go farther on the same tank of gas, but if you pair it with a car that doesn't have as great of an mpg, when they go the same distance, the car with the greater mpg spends less fuel.

If you don't have to use the energy when you aren't utilizing it, then you can conserve the energy for when you do need it.
3 0
3 years ago
Using the equations 2 Sr(s) + O₂ (g) → 2 SrO (s) ∆H° = -1184 kJ/mol SrO (s) + CO₂ (g) → SrCO₃ (s) ∆H° = -234 kJ/mol CO₂ (g) → C(
kkurt [141]

<u>Answer:</u> The \Delta H^o_{rxn} for the reaction is 72 kJ.

<u>Explanation:</u>

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The given chemical reaction follows:

2SrCO_3(s)\rightarrow 2Sr(s)+2C(s)+3O_2(g)      \Delta H^o_{rxn}=?

The intermediate balanced chemical reaction are:

(1) 2Sr(s)+O_2(g)\rightarrow 2SrO(s)    \Delta H_1=-1184kJ

(2) SrO(s)+CO_2(g)\rightarrow SrCO_3(s)     \Delta H_2=-234kJ      ( × 2)

(3) CO_2(g)\rightarrow C(s)+O_2(g)     \Delta H_3=394kJ    ( × 2)

The expression for enthalpy of the reaction follows:

\Delta H^o_{rxn}=[1\times (\Delta H_1)]+[2\times (-\Delta H_2)]+[2\times (\Delta H_3)]

Putting values in above equation, we get:

\Delta H^o_{rxn}=[(1\times (-1184))+(2\times -(-234))+(2\times (394))]=72kJ

Hence, the \Delta H^o_{rxn} for the reaction is 72 kJ.

4 0
3 years ago
Convert eachh into scientific notation
mixer [17]

Answer:

0.00580 →

3000 →

0.000908 →

200. →

Explanation:

yay

7 0
3 years ago
Read 2 more answers
Can someone help, please ??
Bumek [7]
Concentrated I believe
8 0
2 years ago
Read 2 more answers
Other questions:
  • I need to know the answers
    13·1 answer
  • Addition reactions of alkenes are characterized by _________. A) formation of a bond B) addition of two groups across a double b
    11·1 answer
  • Which is not a standard type of phytoplankton
    13·1 answer
  • 14 Which property is a measure of the average kinetic energy of the particles in a sample or matter?
    5·1 answer
  • For the following reaction, 35.4 grams of zinc oxide are allowed to react with 6.96 grams of water . zinc oxide(s) + water(l) --
    9·1 answer
  • Nitrogen-fixers are the critical links between ______.
    6·2 answers
  • What does an ion have that an atom does not?
    15·1 answer
  • What other substance (besides salt) could you sprinkle over ice to affect how fast it melts? Describe how you would test the sub
    14·1 answer
  • What are Properties that can be recognized only when substances react or do not react
    13·1 answer
  • A cell phone manufacturer recalled some 50 million lithium batteries installed in cell phones because the batteries were at risk
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!