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erma4kov [3.2K]
3 years ago
11

Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following s

ituation?
You put a heating pad on your back after exercising.
A) Feeling a metal wire get warmer as you roast a marshmallow over a fire.
B) Warm air rising in a room where the air is moving.
C) The sun warming up the roof on a house.
D) Cold water sinking in a pot of water being warmed up on the stove.
Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
4 0

I can confirm that the answer is A.

EleoNora [17]3 years ago
4 0

Answer:

A) Feeling a metal wire get warmer as you roast a marshmallow over a fire.

Explanation:

Feeling a metal wire get warmer as you roast a marshmallow over a fire is the most similar to putting a heating pad on your back after exercising. They are both examples of conduction.

Hope this helps! :D

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The second student is right.

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This problem is providing the mass-volume percent of a formic acid solution so its molarity is required and found to be 0.313 M after the following calculations.

<h3>Molarity</h3>

In chemistry, units of concentration provide a measurable understanding of the relationship between the relative amounts of both solute and solvent. In the case of molarity, one must relate moles of solute and liters of solution as follows:

M=\frac{mol\ solute}{Volume\ solution \ in \ L}

In such a way, when given this mass-volume percent of 1.44% for the formic acid in the solution, one can assume there is 100 mL of solution and 1.44 g of solute (formic acid), which means one must convert the volume to liters and the mass to moles with:

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Learn more about molarity: brainly.com/question/10053901

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