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vampirchik [111]
3 years ago
9

Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooke

d and the skewer feels warm. What most likely happened?
The fire heated the surrounding air, which cooked the marshmallow.
The heat generated from the marshmallow flowed in the form of thermal energy to the skewer and fire.
The heat from the skewer cooked the marshmallow.
Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.
Chemistry
2 answers:
natita [175]3 years ago
8 0

Answer:

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

Explanation:

He holds a marshmallow on a metal skewer over a fire. A few seconds late, the marshmallow is cooked and the skewer feels warm.

azamat3 years ago
4 0

Answer:

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

Explanation:

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You are counting red blood cells, which objective will be best to count the number of cells, high power or low power objective a
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Answer:

Low power

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Low power would allow for the full image of the red blood cells and would appear as small circles.

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The radius of a single atom of a generic element X is 169 picometers (pm) and a crystal of X has a unit cell that is body-center
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The volume of the unit cell is 2.67 x 10⁻²⁸ m³.

<h3>What is the volume of a unit cell of a body-centered cubic crystal?</h3>

In a body-centered cubic unit cell, the volume occupied by the particles of the substance is about 68% of the total unit cell.

Assuming that a single atomic a sphere, the volume is:

Volume(atom) = 4/3 x π x r³

Volume(atom) = 4/3 x π x (169 x 10⁻¹²)³

Volume(atom) = 2.02 x 10⁻²⁹ m³

There are a total of 9 atoms in a body-centered unit cell, so the total volume occupied by atoms is:

2.02 x 10⁻²⁹ x 9

= 1.82 x 10⁻²⁸ m³

Volume of cell = (1.15 x 10⁻²⁸ ) / 0.68

Volume of cell = 2.67 x 10⁻²⁸ m³

Therefore, the volume of the unit cell is 2.67 x 10⁻²⁸ m³.

Learn more volume of unit cells at: brainly.com/question/1594030

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8 0
2 years ago
As the temperature of one of the four liquids increases, the vapor pressure will
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The vapor pressure of liquid does not depend upon amount of liquid. For example whether the liquid is 50 g or 30 g its vapor pressure will remain same according to the temperature.

The temperature and vapor pressure have exponential relationship. As the temperature of liquid increases its vapor pressure also goes to increase. When the temperature of liquid goes to decrease its vapor pressure also decreases.

The change in vapor pressure of substance when temperature changes is given as,

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How many valence electrons are in atom of radon?
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A simple definition of cells
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Cells are the basic structural and functional unit of life.

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