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EleoNora [17]
3 years ago
7

Based on your knowledge of energy resources conservation, which of the following statements is true? a) Manufacturers can increa

se a light bulb's energy efficiency by using technology that decreases the amount of electromagnetic energy the bulb converts from a given amount of electrical energy. b) Energy resources can be conserved by turning off lights when they are not in use. c) both a and b d) neither a nor b
Chemistry
1 answer:
Kruka [31]3 years ago
5 0

Answer: Option (b) is the correct answer.

Explanation:

When useful energy is conserved then this conservation is known as energy conservation.

For example, when lights of a room are switched on where no one is sitting then on switching off the lights we are conserving wastage of electricity.

Thus, we can conclude that out of the given options, the statement energy resources can be conserved by turning off lights when they are not in use is true.

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Over 100 existing elements are listed and classified on the ____________________.
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The answer is Periodic table
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4 years ago
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Describe the walls of Antelope Canyon. · How was Antelope Canyon made? · Why is water vapor invisible? · How is rain formed in d
Monica [59]

1. Antelope Canyon was formed by the erosion of Navajo Sandstone.

2. The appearance of water is determined

by the way the water molecules are moving.

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6 0
4 years ago
Although both N2 and 02 are naturally present in the air we breathe, high levels of NO and NO2 in the atmosphere occur mainly in
joja [24]

Answer:

(a) Increasing the temperature adds heat which is a reactant shifting the equilibrium rightwards.

(b) Pressure has no effect since the change in the number of moles is zero.

Explanation:

Hello,

In this case, one could represent the given reaction as:

N_2(g)+O_2(g)+ \Delta _rH \leftrightarrow 2NO

Since it is endothermic. Thus, solving the (a) statement, one identifies the heat as a reagent, that is why the reaction cools down as it progress, therefore, by increasing the temperature, heat is added, that is, a reagent is added, which shifts the equilibrium rightwards, in other words, more NO is produced so its concentration increases.

Furthermore, for the (b) statement, since the change in the number of moles is zero, based on the stoichiometric coefficients as shown below:

\Delta \nu =2-1-1=0

Such value implies that the pressure has no effect on the concentration, taking into account the following form of the law of mass action:

Kp=Kc(RT)^{\Delta \nu }

Thus, since \Delta \nu =0, Kp=Kc, so no effect in concentration is due to the pressure.

Best regards.

6 0
3 years ago
The diameter of a sphere is 4 centimeters. Which represents the volume of the sphere?
pishuonlain [190]

Answer:

V=25.133 cm^3

(Is 4 the diameter you were given? To get one of those answers, I think you May have put the wrong diameter)

Explanation:

Radius is diameter/2

R=4/2

R=2

Volume of a sphere=4/3πr3

V=4/3π(2)3

V=25.133 cm^3

7 0
3 years ago
Can someone answer dis:
Oksi-84 [34.3K]

Answer:

Neutrons

Explanation:

5 0
3 years ago
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