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cupoosta [38]
3 years ago
8

What is the total number of joules released when a 5.00-gram sample of water changes from liquid to solid at 0°C?

Chemistry
1 answer:
Marrrta [24]3 years ago
4 0
Energy released from changing the phase of a substance from the liquid phase to solid phase can be calculated by using the specific latent heat of fusion. The heat of fusion of water at 0 degrees Celsius is 334 J/g. Calculation are as follows:
<span>
Energy = 5 grams x 334 J/g
</span><span>Energy = 1670 J</span>
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For each of the following species: C2+ &amp; O2- Write the molecular orbital energy diagram and fill in the electrons Hint: in e
Tju [1.3M]

Molecular orbital energy is the energy associated with each electron in an atom or molecule.

It is expressed in electron volts (eV) and is determined by the electron's position in the atom or molecule. The molecular orbital energy diagram and fill-in the electrons are given here in each case, the number of valence electrons in the species is determined first; this is followed by the valence molecular orbital diagram for each species.

C2+: Molecular Orbital Energy Diagram

1s2 2s2 2p2

σ2s*  ← 0 e-  

σ2s   ← 2 e-

σ2p*  ← 0 e-  

σ2p   ← 0 e-

π2p*  ← 0 e-  

π2p   ← 0 e-

Bond Order: 0

Stability: Unstable

Magnetism: Diamagnetic (no unpaired electrons)

O2-: Molecular Orbital Energy Diagram

1s2 2s2 2p4

σ2s*  ← 0 e-  

σ2s   ← 2 e-

σ2p*  ← 0 e-  

σ2p   ← 2 e-

π2p*  ← 0 e-  

π2p   ← 2 e-

Bond Order: 1

Stability: Stable

Magnetism: Paramagnetic (2 unpaired electrons)

For more questions like Molecular orbital theory click the link below:

brainly.com/question/20436223

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6 0
2 years ago
An element's atomic mass does not include the mass of its _____.
Oksi-84 [34.3K]

。☆✼★ ━━━━━━━━━━━━━━  ☾

The correct option would be 'electrons'

This is because electrons have a relative mass of zero.

Have A Nice Day ❤

Stay Brainly! ヅ

- Ally ✧

。☆✼★ ━━━━━━━━━━━━━━  ☾

3 0
3 years ago
Small quantities of hydrogen and helium gas at the same temperature are released simultaneously at one end of a laboratory. Stat
olga2289 [7]

Answer:

hydrogen

Explanation:

it diffuses faster compared to helium since it is less dense

4 0
3 years ago
A ball falls 5 m and then bounces to a height of 3 m. What height is the best
Sonja [21]
The answer is C 5m. Thanks
3 0
3 years ago
How many molecules are in 6 moles of methane
seraphim [82]
<h3>Answer:</h3>

3.6 × 10^24 molecules

<h3>Explanation:</h3>

Concept: Moles and Avogadro's number

  • We need to know that one mole of a compound has molecules equivalent to the Avogadro's number, 6.022 × 10^23.
  • Therefore; 1 mole of a compound contains 6.022 × 10^23 molecules

In this case;

We are given 6 moles of Methane;

But 1 mole of methane = 6.022 × 10^23 molecules

Therefore;

Molecules = Number of moles × Avogadro's number

                 = 6 moles × 6.022 × 10^23 molecules/mole

                 = 3.613 × 10^24 molecules

                 =  3.6× 10^24 molecules

Thus, there are 3.6× 10^24 molecules  in 6 moles of methane.

6 0
3 years ago
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