(Please!!!) Which of the following is not an example of kinetic energy? (2 points) sound chemical energy radiant energy heat

A methane molecule, CH4, in the stratosphere or (2) a CH3 molecule and a hydrogen atom formed from breaking one of the carbon‐hy

MA_775_DIABLO [31]

The methane molecule in the stratosphere has a higher potential energy than the CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule.

The complete question is:

<em>For each of the following situations, you are asked which of two objects or substances has the higher energy. Explain your answer with reference to the capacity of each to do work and say whether the energy that distinguishes them is kinetic energy or potential energy.</em>

<em>a. (1) A methane molecule, CH4, in the stratosphere or (2) a CH3 molecule and a hydrogen atom formed from breaking one of the carbon-hydrogen bonds in a CH4 molecule.</em>

<h3>Which have a higher energy?</h3>

The methane molecule in the stratosphere is a stable molecule and possesses chemical potential energy.

The CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule are unstable molecules and possesses kinetic energy. However, some of their energy has been used in breaking the bond.

Thus, the methane molecule in the stratosphere has a higher potential energy than the CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule.

In conclusion, the energy in the methane molecule is higher.

Learn more about potential energy at: brainly.com/question/14427111

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5 0

2 years ago

Balance the equation by inserting coefficients as needed. equation: C 2 H 6 O+O 2 longrightarrow CO 2 +H 2 O

shepuryov [24]

The coefficients needed to balance the equation would be 2, 7, 4, and 6 respectively.

<h3>Balancing chemical equation</h3>

This requires that the number of atoms of each element is the same both on the reactant and product's sides.

Hence, the balanced equation of the reaction becomes:

$2C_2 H_6 O+ 7O_2 --- > 4CO_2 +6H_2 O$

Thus, the coefficient for each species would be 2, 7, 4, and 6 respectively.

More on balancing chemical equations can be found here: brainly.com/question/15052184

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4 0

3 years ago

Is table salt, NaCl, a typical ionic compound? Explain.

romanna [79]

Yes because Na is a metal and Cl is a nonmental, so they criss cross charges, as Na is 2+ and Cl is 2-, 2+ indicates that Na gives AWAY electrons to Cl and the 2- on Cl indicates it receiving electrons. NaCl is table salt and forms a crystal lattice structure, which is why salt is solid at room temperature.

6 0

3 years ago

Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin pla

Zepler [3.9K]

Answer:

26.08 kJ

Explanation:

An endothermic reaction occurs when the heat is absorbed by the system, it means that it's a positive heat, and consequently, the enthalpy change will be positive too. Because that isn't happening a phase change, the heat transferred is sensitive, and it can be calculated by:

Q = m*c*ΔT

Where Q is the heat, m is the mass of the water (because the change is happening in it), c is the specific heat of water, and ΔT is the temperature change (final - initial).

m = volume*density

m = 25.00 mL * 1 g/mL

m = 25 g

The water is losing heat, so for it, the heat must be negative, because it will be an exothermic process. The heat for the reaction will be the same that is lost by water because the energy must be conserved (first law of thermodynamics):

Q = 25*4.18*(21.9 - 25.8)

Q = - 407.55 J

Q = + 407.55 J (for the endothermic reaction given)

The enthalpy change is the heat divided by the number of moles of the substance that is dissolved. The molar mass of NH₄NO₃ is:

2*14 g/mol of N + 4*1 g/mol of H + 3*16 g/mol of O = 80 g/mol

The number of moles is the mass divided by the molar mass:

n = 1.25/80

n = 0.015625

So, the change in enthalpy is:

ΔH = + 407.55/0.015625

ΔH = 26,083.2 J

ΔH = 26.08 kJ

6 0

3 years ago

What is an example of conduction

Alexandra [31]

Explanation:When the stove turns on the skillet will become very hot because of the conduction of heat transferring from the stove to the skillet.

7 0

3 years ago