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Ivenika [448]
3 years ago
14

You've asked your friends to define the terms "chemistry" and "chemical." With which definitions do you agree? Check all that ap

ply. Check all that apply. A chemical is a substance that has the same composition but different properties wherever it is found. Chemistry is the study of the composition, structure, properties, and reactions of matter. Chemistry is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy. A chemical is a substance that has the same properties but different composition wherever it is found.
Chemistry
1 answer:
OleMash [197]3 years ago
5 0

Answer:

  • A chemical is a substance that has the same composition and properties wherever it is found
  • Chemistry is the study of the composition, structure, properties, and reactions of matter

Explanation:

A chemical is made up of one or more chemical compounds that allow it to fulfill a particular function, because a chemical is a substance that has the same composition and properties wherever it is found.

Already Chemistry is a branch of the Natural Sciences that studies the matter, its properties, constitution, transformations and the energy involved in these processes. Matter, and all that composes it, is the main object of study of chemistry.

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The hotter it is, the faster the atoms in something are moving.

pls give brainliest.

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How is the separation of dna like a zipper
Sedbober [7]

The two strands must be separated like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases.

<u>Explanation:</u>

  • A double helix structure formed by two polypeptide chains is separated like the two sides of a zipper. A zipper is formed by breaking the weak hydrogen bonds that link the paired bases. During replication, an enzyme "Helicase" travels down the DNA and splits the chain and it forms 2 separate strands.
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3 0
3 years ago
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Igoryamba

Answer:

The arm that was not sprayed with anything

Explanation:

The control group would be <u>the arm that was not sprayed with anything</u>.

<em>The control group during an experiment is a group that forms the baseline for comparison in other to determine the effects of a treatment. The control group does not include the variable that is being tested and as such, it provides the benchmark to measure the effects of the tested variable on the other group - the experimental group. In this case, the experimental group would be the arm that was sprayed with the repellent.</em>

8 0
3 years ago
A train travels 74 kilometers in 3 hours, and then 73 kilometers in 2 hours. What is its average speed? km/hr
nikitadnepr [17]
12km/Hr is the correct answer
 
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3 years ago
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Problem 12.002 the molar analysis of a gas mixture at 30°c, 2 bar is 40% n2, 50% co2, 10% ch4. determine
andreev551 [17]
The problem is incomplete. However, there can only be two probable questions for this problem. First, you can be asked the individual partial pressures of each gas. Second, you can be asked the volume occupied by each gas. I can answer both cases for you.

1.

Let's assume ideal gas.
Pressure for N₂: 2 bar*0.4 = 0.8 bar
Pressure for CO₂: 2 bar*0.5 = 1 bar
Pressure for CH₄: 2 bar*0.1 = 0.2 bar

2. For the volume, let's find the total volume first.

V = nRT/P = (1 mol)(8.314 J/mol-K)(30 +273 K)/(2 bar*10⁵ Pa/1 bar)
V = 0.0126 m³
Hence,
Volume for N₂: 0.0126 bar*0.4 = 0.00504 m³
Volume for CO₂: 0.0126*0.5 = 0.0063 m³
Volume for CH₄: 0.0126*0.1 = 0.00126 m³
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3 years ago
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