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3 years ago

A prairie dog eats grass. A coyote eats the prairie dog. This is an example

Chemistry

1 answer:

Oduvanchick [21]3 years ago

5 0

Answer:

This is an example of a food chain

Explanation:

Think of it as a chain reaction. The grass feeds and nourishes the prairie dog. Upon eating the prairie dog, the coyote gets the nutrients from both the grass the prairie dog ate and from the prairie dog itself.

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A mixture of gases was found to have a total pressure of 950mmHg. Gas number one has a pressure of 335mmHg. Gas number two has a

jeyben [28]

<u>Answer:</u> The partial pressure of gas number 3 is 159 mmHg

<u>Explanation:</u>

Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.

To calculate the partial pressure of gas number 3, we use the law given by Dalton, which is:

$P_T=p_{1}+p_{2}+p_3$

We are given:

Total pressure of the tank, $P_T$ = 950 mmHg

Vapor pressure of gas number 1, $p_{1}$ = 335 mmHg

Vapor pressure of gas number 2, $p_{2}$ = 456 mmHg

Putting values in above equation, we get:

$950=335+456+p_3\\\\p_{3}=[950-(335+456)]=159mmHg$

Hence, the partial pressure of gas number 3 is 159 mmHg

5 0

3 years ago

Define an occluded front in your own words

Flura [38]

Answer:

a warm air mass is caught between two colder air masses. The colder air moves under the warmer air pushing it up and then moves forward until it meets a mass that is warmer and pushes it up too.

3 0

3 years ago

List four metric prefixes and list what they stand for ( what they mean )

balandron [24]

A kilogram is 1,000 times larger than one gram (so 1 kilogram = 1,000 grams).
A centimeter is 100 times smaller than one meter (so 1 meter = 100 centimeters).
A dekaliter is 10 times larger than one liter (so 1 dekaliter = 10 liters)
A meter gram liter is the base unit

so. kilo-, centi, deka-, and meter grams and liters

8 0

4 years ago

start out as one kind of rock, but large amounts of pressure and heat change them into a different kind.

Eddi Din [679]

Answer:

Metamorphic

Explanation:

6 0

3 years ago

Which compound can be used to preserve biological specimens? A central C is double bonded to an O, and single bonded to 2 H. A c

Darina [25.2K]

Answer:

A central C is double bonded to an O, and single bonded to 2 H

Explanation:

Methanal, also known as formaldehyde, is a chemical compound used to preserve dead biological specimens for further study. It is called formalin when in a solution and it helps keep specimens in a fresh state by hardening the tissues of the specimen involved.

Formaldehyde is a gaseous compound that has an aldehyde functional group i.e. -CHO and has a chemical formula, H-CHO or CH2O as described in the question that a central C is double bonded to an O, and single bonded to 2 H (see attached image for structural formula).

4 0

4 years ago