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Chemistry

Frazier

Which of the following is an example of an organism maintaining homeostasis?

A.

a boy riding a bike

B.

a cat grooming itself

C.

a bear nursing her cubs

D.

a man sweating while he runs

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Chemistry

Hazel Williams

Students in science class were asked to do an experiment with a can of soda. They placed an unopened can of soda on a digital scale and recorded the initial mass as 340 g. They then opened the soda can and left it open for a day. The following day, the students took the mass of the soda can again and noticed that it was only 332g. They then poured some of the soda into a glass and observed that it was no longer fizzy. explain why the soda has less mass after it has gone flat.

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Chemistry

Davis Green

If a 30 gram sample of Copper shots (specific heat = 0.385 J/gºC) changed from 27ºC to 90ºC, how much heat was involved?

728 J

-728 J

1,351 J

-1,351 J

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Chemistry

Charity Frazier

In an energy pyramid, which level has the most available energy?

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Chemistry

Blaine Baxter

Which of the following reactant pairs will not react together to produce a reaction?

A. Li + H2O

B. Fe + Ni (OH) 2

C. Ca + ZnF2

D. Co + BaCl2

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Chemistry

Catalina

A certain object has a very high specific heat. The object is heated over a flame for 1 minute. The flame is shut off, and the object is allowed to cool down for one minute. The object most likely: A. heats up quickly and cools down quickly. B. heats up quickly and cools down slowly. C. heats up slowly and cools down quickly. D. heats up slowly and cools down slowly.

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Chemistry

Juliet Riddle

One result of the water table reaching the surface is a lake true or false

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Chemistry

Brenton Singh

What do the name and formula of a molecular compound describe?

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Chemistry

Maximillian Hatfield

What are the physical properties of a chalk

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Chemistry

Tobias Barnett

What could people do in order to make nonrenewable resources last longer?

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Chemistry

Courtney

Duties that are often performed by pharmacy technician include

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Chemistry

Ben Welch

A mole is most similar to?

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Chemistry

Christopher

What is an electron that occupies the outermost energy level or shell of an atom called?

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Chemistry

Brian Lam

Which method would increase the solubility of gas

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Chemistry

Lyric Wallace

In which atmosphere layer does 80% of the gas in the atmosphere reside

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