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maks197457 [2]
3 years ago
13

The sum of potential and kinetic energies in the particles of a substance is called _______ energy.

Chemistry
2 answers:
Cloud [144]3 years ago
5 0
I think the sum of potential and kinetic energies in the particles of a substance is called the internal energies ?
White raven [17]3 years ago
5 0

Answer: Mechanical energy

Explanation:

Mechanical energy of a body can be defined as the sum of potential energy and kinetic energy of a system.

The conservation of mechanical energy states that the sum of kinetic energy and potential energy in a system remains constant.

The only condition is the forces acting on it should be conservative forces.

Example: Running of a dog. It is its mechanical energy that is allowing a dog to run by the combination of kinetic and potential energy.

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When a mixture of iron powder and sulphur is heated it glows more brightly than that of iron filings and sulphur.Explain this ob
Bond [772]

Answer:

I don't know

Explanation:

mixture of iron powder and sulphur heated it glows because sulphur and iron are more reactive metals that they shine and sulphur can react with water produce fire it's write

3 0
2 years ago
The burning of propane gas can be represented as a balanced chemical reaction as follows: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Calcula
Snezhnost [94]

Answer: 20L of H2O

Explanation:

C3H8 + 5O2 → 3CO2 + 4H2O

Recall 1mole of a gas contains 22.4L at stp

5moles of O2 contains = 5 x 22.4 = 112L

4moles of H2O contains = 4 x 22.4 = 89.6L

From the equation,

112L of O2 produced 89.6L H2O

There for 25L of O2 will produce XL of H2O i.e

XL of H2O = (25 x 89.6)/112 = 20L

6 0
3 years ago
Which statement correctly describes an atom of the element helium? A. An atom of helium has a full outer energy level and is the
Citrus2011 [14]
The correct description for an atom of helium would be option C. An atom of helium has its valence electrons in its first energy level, it wouldn't and can't satisfy the Octet rule as it only has 2 electrons, but with 2, it has a full shell, as the first energy level can hold only 2 electrons.
4 0
3 years ago
The pressure of a gas increases when the temperature _ at constant volume
weqwewe [10]
When it’s warmer so when temperature encreases
7 0
3 years ago
What is the balanced chemical equation for the word equation below?
ladessa [460]

Answer:

4Fe + 3O₂ → 2Fe₂O₃

Explanation:

Fe → ²⁺

O → ²⁻

But Iron III is Fe³⁺

So we have Fe³⁺ and O²⁻, the formula for the oxide must be Fe₂O₃ so the equation can be:

4Fe + 3O₂ → 2Fe₂O₃

6 0
3 years ago
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