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Naya [18.7K]
3 years ago
14

Which of the following is not an example of potential energy? Group of answer choices electrical energy, chemical energy, gravit

ational energy, elastic energy.
PLS HELP FAST
Chemistry
1 answer:
Sholpan [36]3 years ago
6 0

Answer: The one listed below that's NOT an example of potential energy is mechanical energy. Mechanical energy is categorized as a kinetic energy with light, sound, and thermal/heat energy.

HOPE THIS HELPS

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Starting at atmospheric pressure, by how much must the pressure change in order to lower the boiling point of water by 1° C? You
Marina86 [1]

Answer:

ΔP = -3556.36 Pa

Explanation:

Atmospheric pressure, P = 101300 Pa

Latent heat of boiling water, L_{B} = 2.256 * 10^{6} J/kg

Boiling point at atmospheric pressure, T = 373.15 K

ΔT = 1 K

The change in volume as the water boils to vapor will be

\triangle V = V_{v} - V_{l}

Since the volume of vapor (V_{v}) is far greater than the volume of liquid (V_{l})

\triangle V = V_{v}

Using the ideal gas equation:

PV_{v} = RT\\V_{v} = RT/P

R = 8.314 J/mol-K

V_{v} = \frac{8.314 * 373.15}{101300} \\V_{v} = 0.0306 m^{3}

ΔV = 0.0306 m³

Molecular weight of water, MW = 0.018 kg/mol

Using the Clausius - Clapeyron equation:

\triangle P = \frac{L_B \triangle T}{T \triangle V}* MW\\\triangle P = \frac{2.256 * 10^{6}  *1}{373.15* 0.0306}* 0.018

ΔP = -3556.36 Pa

But the pressure change is said to lower the boiling point of water, only a negative pressure change will lower the boiling point.

ΔP = 3556.36 Pa

4 0
3 years ago
Which class of elements include all of the elements that are gases at room temperature
Verizon [17]

The nonmetals are divided into two categories: reactive nonmetals and noble gases. Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). hope this helps

6 0
3 years ago
What does the lysosome do
Ostrovityanka [42]

Answer: They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.

Explanation:

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4 years ago
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A chemist observed bubbling and fizzing after adding an acid solution to a
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Answer:

a chemical reaction occured

Explanation:

bubbling and fizzing after adding a substance, most offten means a chemical reaction is happening

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3 years ago
Nearly every compound of silicon has the element in the ⁺4 oxidation state. In contrast, most compounds of lead have the element
adoni [48]

This is due to the phenomenon known as the Inert pair effect.

Orbitals shield better with a lower azimuthal quantum number(l). Hence, s orbitals shield better than p which shields better than d which is better than f, etc.

The electronic configuration of Si is [Ne] 3s²3p². The 2s and 2p orbitals are shielding the electrons from the nucleus. So the s and p electrons are ready to be ionized. And hence shows a +4 oxidation state.

Similarly, as we move down the group, atomic size increases, and metallic character also increases. Also, lead is below Si and a lower oxidation state is more stable down the group. Hence lead shows a +2 oxidation state.

To learn more about the oxidation state, visit: brainly.com/question/11313964

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