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2 years ago

____ help scientists understand processes in the natural world by providing simpler representations of those processes.

Chemistry

1 answer:

Marina CMI [18]2 years ago

7 0

Answer:

Models help scientists understand processes in the natural world by providing simpler representations of those processes.

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4 NH3 + 6 NO → 5 N2 + 6 H2O How many moles of NH3 are necessary to produce 0.824 mol N2?

GrogVix [38]

4 mol NH₃ → 5 mol N₂
x mol NH₃ → 0.824 mol N₂

x=0.824*4/5=0.6592 mol

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3 years ago

Dry ice changes from a solid directly into a gas at room temperature. Sublimation is the transition of a substance directly from

Svetach [21]

Answer:

The process in which a solid changes directly to a gas is called sublimation. It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Dry ice (solid carbon dioxide, CO2) is an example of a solid that undergoes sublimation.

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2 years ago

When a new bond forms in a chemical reaction, what happens?

Kisachek [45]

The answer to this question would be A. Energy is released.

When a chemical bond is a form, the bond will either suck up energy or produce energy. So, to be precise the energy is not always released but also can be absorbed. In this case, the energy released number will be a minus.

Options B and C is definitely wrong since the bond is formed by an electron, it won't affects neutron/proton.
Option D might be true since the product is made of 2 or more atoms then it would seem larger. But the size of the actual atom won't be increased.

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3 years ago

Read 2 more answers

The atmospheric pressure at sea level is greater than on Mount Everest

statuscvo [17]

This statement is true in fact to mount Everest atmospheric pressure sit at about one third of that at sea level.

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3 years ago

Explain how to calculate the density of a regular shaped object such as a rectangular box.

belka [17]

The density of a regular shaped object such as a rectangular box is calculated as thus:

The amount of matter is its mass, and the space it takes up is its volume.

So therefore, to calculate the density of an object such as the a regular shaped one like a rectangular box;

Its density = mass / volume.

<h3>Derived quantities</h3>

These are physical quantities which are obtained from fundamental quantities. I'm order words, derived quantities are quantities which are obtained from the combination of of fundamental quantities either by addition, division or multiplication

Some few examples of derived quantities are as follows:

Density

Velocity
Upthrust
Volume
Acceleration

So therefore, the density of a regular shaped object such as a rectangular box is calculated as thus:

The amount of matter is its mass, and the space it takes up is its volume.

So therefore, to calculate the density of an object such as the a regular shaped one like a rectangular box;

Its density = mass / volume.

Learn more about derived quantities:

brainly.com/question/28180944

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1 year ago