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Fofino [41]
4 years ago
6

What is a chemical change??

Chemistry
1 answer:
alina1380 [7]4 years ago
4 0
<span>Chemical change is any change that results in the formation of new chemical substances. </span>
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When the temperature of a 3. 0-l sample of a gas is dropped from 200°c to 100°c, what will be the final volume of the gas sample
ipn [44]

P1V1T1=P2V2T2 Add 273 to convert degrees Celsius to Kelvin:

∴200×25/298=250×V2/273, ∴V2=200×25×273/298×250, ∴V2=18.32L

<h3>Where is the volume equation?</h3>

The basic formula for volume is length, breadth, and height, as opposed to length, width, and height for the area of a rectangular shape. The calculation is unaffected by how you refer to the various dimensions; for instance, you can use "depth" instead of "height."

<h3>What is chemistry using volume units?</h3>

Volume, which is measured in cubic units, is the 3-dimensional space occupied by matter or encircled by a surface. The cubic meter (m3), a derived unit, is the SI unit of volume.

to know more about volume and temperature here:

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4 0
1 year ago
7th grade SCIENCE PLEASE HELP ​
Flura [38]

Answer:  the first one is adaptation, third is migration, 4th is hibernation,

Explanation:

i dont know the other ones, sorry because i am also a 7th grader.

4 0
3 years ago
How many joules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22C to 234C? The specifi
NemiM [27]
The given formula for heat, Q=mc(Tf-Ti), is the best way to solve such problems with changes in temperature. It can be said that m is the mass of the substance. C is the specific heat of the substance. The term (Tf-Ti) is the change in temperature.

Q = mc(Tf-Ti) = 480g(0.96 J/g-C)(234-22) = 97689.6 Joules of heat
6 0
3 years ago
Which pair of atoms is held together by a covalent bond?
Burka [1]
Carbon and oxygen to form carbon
3 0
3 years ago
Which of the following best describes physical science?
Alex17521 [72]

The study of matter and energy best describes physical science. Hence, option B is correct.

<h3>What is physical science?</h3>

Physical science is the study of the inorganic world.

Physics is a branch of science that studies matter and its motion through space and time, along with related concepts such as energy and force. Physics is one of the "fundamental sciences" because of the other natural sciences (like biology, geology etc.)

Thus the study of matter and energy best describes physical science. Hence, option B is correct.

Learn more about the physical science here:

brainly.com/question/12842883

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3 0
2 years ago
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