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vagabundo [1.1K]
3 years ago
14

The term "conservation of energy" means that the total amount of energy in a system isolated from the rest of the universe remai

ns constant although energy may be transformed from one form to another within the system. True False
Chemistry
1 answer:
il63 [147K]3 years ago
8 0

Answer:

True

Explanation:

<u>The first law of thermodynamics</u> establishes a relationship between the internal energy of the system and the energy that it exchanges with the environment in the form of heat or work.

The first law of thermodynamics determines that the internal energy of a system increases when heat is transferred or work is done on it.

Like all the principles of thermodynamics, the first principle is based on systems in equilibrium.

On the other hand, it is likely that you have heard more than once that energy is neither created nor destroyed, only transformed. It is the general principle of energy conservation. Well, the first law of thermodynamics is the application to thermal processes of this principle.

The universe as a whole could be considered an isolated system, and therefore its total energy remains constant.

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What is the symbol for moles using the ideal gas equation
vredina [299]

Answer: N is the numbers of moles

Explanation:

An ideal gas can be characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them may be deduced from kinetic theory and is called the. n = number of moles. R = universal gas constant = 8.3145 J/mol K. N = number of molecules.

8 0
3 years ago
A commercial oven with a book value of $67,000 has an estimated remaining 5 year life. A proposal is offered to sell the oven fo
baherus [9]

Answer:

$13,500

Explanation:

The differential analysis of the proposal to replace the commercial oven is shown below:-  

The Total differential decrease in cost = Annual maintenance cost reduction × Number of years applicable

= $23,000 × 5

= $115,000  

Inflow cash = The Total differential decrease in cost + Proceeds from sale of equipment

= 115,000 + $8,500

= $123,500

The Net differential decrease in cost from replacing equipment = Inflow cash - Cost of new equipment

= $123,500 - $110,000

= $13,500

8 0
3 years ago
Why is the addition of cold distilled water to the container holding the aspirin you are trying to isolate a necessary step and
Rudik [331]

Answer:

The aspirin is more soluble in ethanol than water - the water helps the crystals separate from solution.

Explanation:

Hope this helps!

3 0
2 years ago
A chemist who studies water samples did a demonstration of how to test for lead in water. She added a clear solution of potassiu
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Answer:

The swirling yellow solid formed is lead iodide (PbI₂).

Explanation:

  • The reaction of potassium iodide (KI) with lead nitrate (Pb(NO₃)₂) will produce lead iodide (PbI₂) and potassium nitrate (KNO₃) according to the equation:

2KI + Pb(NO₃)₂ → PbI₂↓ + 2KNO₃

  • Lead iodide (PbI₂) is a yellow swirling precipitate that is formed from the reaction.
3 0
3 years ago
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Besides plants, do other organism get their energy directly from the Sun?<br> yes or no
Contact [7]

yes they doExplanation:

3 0
3 years ago
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