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
Oduvanchick [21]
3 years ago
5

For which one of the following is ΔHfo zero?

Chemistry
2 answers:
Vlada [557]3 years ago
6 0
The answer is most likely C
Sholpan [36]3 years ago
3 0
The standard enthalpy of formation is zero for B and D since by definition, the standard enthalpy of formation for an element at its standard state is zero. The monatomic oxygen is not the standard state of oxygen while carbon dioxide is already a molecule. 
You might be interested in
H2SO3<br> What does this stand for?
ELEN [110]

Answer:

It means Sulfurous Acid

Explanation:

8 0
3 years ago
Read 2 more answers
The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held constant. How does the gas pressure change?
liberstina [14]

Answer:

It increases by a factor of eight

Explanation:

When temperature is held constant, gas pressure changes according the volume, in undirectly proportion.

Volume increases →  Pressure decreases

Volume decreases → Pressure increases

As volume gas, was reducted from 4L to 0.5L, it was reduced by 1/8, so the pressure gas was increased by a factor of eight.

5 0
3 years ago
Assuming the reaction is at STP if 2.25 moles of Li are exposed to 3.25 moles of water, which is the limiting reactant?
crimeas [40]

Answer: Lithium

Explanation:

The ratio for the reaction of Li and water is the same, but there are more moles of water than lithium. Therefore, lithium is the limiting reactant.

5 0
2 years ago
What is the electron configuration for the Co3+ ion?
liq [111]

Answer:

1s2 2s2 2p6 3s2 3p6 3d4 4s2

Explanation:

Cobalt has twenty seven electrons hence Co3+ has twenty four electrons. It has lost three electrons from its valence shell. In filling the orbitals, we keep in mind that the energy of the 4s level is higher than that of the 3s level when a transition metal forms a complex hence the 4s is filled before the 3s level as shown in the answer above.

6 0
3 years ago
PLEASE.
ivolga24 [154]

Answer:

I think that the answer is A.

5 0
3 years ago
Other questions:
  • The freezing-point depression of a 0.100 m MgSO4 solution is 0.225°C. Determine the experimental van't Hoff factor of MgSO4 at t
    15·1 answer
  • A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
    6·1 answer
  • How many protons, neutrons, and electrons could an isotope of this atom contain?
    14·1 answer
  • The mechanism for electrophilic aromatic substitution reaction involves addition and
    6·1 answer
  • I.
    7·1 answer
  • In the process of photosynthesis, sunlight is converted into
    11·2 answers
  • What is the mass of 3.50 moles of Ba(NO2)2?
    8·1 answer
  • What is atomic mass?????​
    9·1 answer
  • 100 POINTS FOR QUESTION
    15·2 answers
  • Gravity relates to a stream's ability to erode and deposit material by causing water to flow faster down a steep slope. True or
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!