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3 years ago

Why do your feet feel cooler on a tile floor than on a warm rug?

Chemistry

2 answers:

katovenus [111]3 years ago

7 0

Answer:

Option d

Explanation:

The question is to find the reason why our feet feel cooler on a tile floor than on a warm rug.

The reason is

i) the tile is a better heat conductor and it moves our body heat faster away from our skin.

ii) The rug is a good insulator and hence it slows down the flow of heat from our skin of touch and hence we feel warmer

So out of the four options

option d is right.

The rug is a better insulator than the tile.

stira [4]3 years ago

6 0

<span>The rug is a better insulator than the tile</span>

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Paraphin [41]

I thinkkkk it’s OCHbl

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3 years ago

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Which substance is the oxidizing agent in the following reaction? Fe2S3 + 12HNO3 → 2Fe(NO3)3 + 3S + 6NO2 + 6H2O Which substance

aleksandr82 [10.1K]

Answer:

HNO3 is the oxidizing agent

Explanation:

Step 1:

The oxidizing agent is responsible to oxidize another. but itself undergoes a reduction .

Fe2S3:

Fe has an oxidation number of +3

S has an oxidation number of -2

HNO3:

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

H has an oxidation number of +1

N has an oxidation number of +5

Fe(NO3)3

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

Fe has an oxidation number of +3

Since NO3 has an oxidation number of -1; N has an oxidation number of +5

S alone has an oxidation number of 0

NO2:

O has an oxidation number of -2 (we have 2 times O, this makes -4)

N has an oxidation number of +4

Fe doesn't change from oxidation number. It stays +3

N goes from +5 to +4 → this is a reduction

S goes from -2 to 0 → this is an oxidation

The reducing agent is the compound that contributes the oxidized species (S).

The oxidizing agent contributes the reducing species (N)

The answer is HNO3

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3 years ago

Think of an everyday situation in which two objects interact and exert a force on each other. Explain how the interaction can ca

blondinia [14]

Answer:

It's explained below.

Explanation:

An everyday situation is when we raise an object.

Now, when we raise an object, energy is transferred to the Earth object system and thus the gravitational field energy of the system will increase.

Now, this energy is usually released when the object falls. The mechanism of this release is known as gravitational force.

In the same manner, two magnetic and electrically charged objects that are interacting at a distance will exert forces on each other and this can lead to transfer of energy between the interacting objects.

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3 years ago

1: The atomic number of an atom is equivalent to which of the following?

IrinaVladis [17]

I think the correct answer among the choices presented above is option C. The <span>atomic number of an atom is equivalent to the number of protons in the nucleus. For a neutral atom, it is also the number of electrons since in a neutral atom protons and electrons are present in equal number.</span>

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3 years ago

Velocity is a vector quantity.Why?

Alika [10]

Answer:

Has size and magnitude whereas a scalar quantity has only size

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