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Dahasolnce [82]
4 years ago
10

Energy cannot be created or destroyed. It can only be transferred from one form to another. Energy that is "wasted," does not di

sappear. Instead, it is transferred to its surroundings and spreads out so much that it becomes difficult to do anything useful with it. Incandescent light bulbs are very inefficient in energy transfer. Energy-saving lightbulbs, such as fluorescent bulbs transfer a greater proportion of electrical energy as light energy. In fluorescent bulbs what kind of energy is "wasted" in the energy transfer from electricity to light?
A) heat energy
B) kinetic energy
C) chemical energy
D) electrical energy
Chemistry
2 answers:
Inessa [10]4 years ago
7 0

Answer:

A: heat energy

Explanation:

because as we light up the bulb it gives us light energy

but when we touch it we feel that it is hot (heat energy)

the heat energy given of is not for our use and goes to waste

hoa [83]4 years ago
4 0

Answer: Option (A) is the correct answer.

Explanation:

Heat energy is defined as the energy produced due to the movement of particles, atoms or molecules in an object.

Kinetic energy is defined as the energy acquired by the molecules of an object because of their movement due to increase in temperature. More is the increase in temperature more will be the movement of molecules.

Chemical energy is defined as the energy which is stored within the bonds of a chemical compound.

Electrical energy is defined as the energy which arises due to the flow of electrons or ions in a substance.

In fluorescent bulbs, heat energy is wasted in the energy transfer from electricity to light.

Thus, we can conclude that heat energy is wasted in the energy transfer from electricity to light.

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A mixture of methane and krypton gases is maintained in a 8.99 L flask at a pressure of 1.68 atm and a temperature of 46 °C. If
sweet-ann [11.9K]

Answer:

22.81 g

Explanation:

Given that:

Pressure = 1.68 atm

Temperature = 46 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (46 + 273.15) K = 319.15 K

Volume = 8.99 L

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

1.68 atm × 8.99 L = n × 0.0821 L.atm/K.mol × 319.15 K

<u>⇒n = 0.5764 moles </u>

Given that :

Amount of methane = 4.88 g  

Molar mass = 16.04 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{4.88\ g}{16.04\ g/mol}

Moles= 0.3042\ mol

<u>Moles of Krypton = Total moles - Moles of methane = 0.5764 - 0.3042 moles = 0.2722 moles</u>

Also, Molar mass of krypton = 83.798 g/mol

So,

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

0.2722\ moles=\frac{Mass}{83.798\ g/mol}

<u>Mass of krypton = 22.81 g</u>

6 0
3 years ago
Why does poop turn blue after you bleach it
Llana [10]

Enzymes and activators in the poop might cause the bleach to decompose quickly, releasing chlorine gas. Otherwise, it would have the effect making your toilet smell like a swimming pool, which might be a worthwhile improvement.

6 0
3 years ago
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adelina 88 [10]

Answer:

communicable and non-communicable?

7 0
4 years ago
A woman has a body mass of 53 kg. What is her mass in grams?
Alekssandra [29.7K]

Answer:

53000 grams

Explanation:

1kg to grams = 1000

therefore;

53 × 1000= 53000 grams

please rate brainliest

7 0
2 years ago
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How much of this reactant should he order to make
AlladinOne [14]

Answer:

the answer is Fe2O3

Explanation:

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