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OverLord2011 [107]
3 years ago
12

Which descriptions apply to isomers? Check all that apply.

Chemistry
2 answers:
pychu [463]3 years ago
6 0
A. same molecular formula d. different structural formula f. same number of each kind of atom
cestrela7 [59]3 years ago
3 0

Explanation:

Isomers are the molecules which have same molecular formula but different arrangement of atoms.

Or, we can say that isomers have different geometric arrangements.

Thus, we can conclude that following descriptions are applied to isomers.

  • same molecular formula
  • different structural formula
  • same number of each kind of atom
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Suppose you burn a substance in the air (reactants) and produce smoke and ash (products). The law of conservation of mass states
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Answer:

<u>The same as</u> can best fill the space

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted.

It shows that when wood burns, it combines with oxygen and changes not only to ashes, but also to carbon dioxide and water vapor. The gases float off into the air, leaving behind just the ashes. Suppose you had measured the mass of the wood before it burned and the mass of the ashes after it burned. Also suppose you had been able to measure the oxygen used by the fire and the gases produced by the fire. What would you find? The total mass of matter after the fire would be the same as the total mass of matter before the burning.

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3 years ago
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What branch of science is concerned with the interaction between matter and electromagnetic radiation?
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It’s number 3..................
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3 years ago
Lab: Thermal Energy Transfer
scoundrel [369]

Answer:

Thermal energy transfers occur in three ways: through conduction, convection, and radiation. When thermal energy is transferred between neighboring molecules that are in contact with one another, this is called conduction.

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2 years ago
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2. Density is a physical property of a molecule that's measured as mass per unit volume.
spayn [35]

Answer:

A = 0.691g/cm³

B = liquid A at the bottom, liquid B in the middle and the cube at the top

Explanation:

Hello,

a)

Density = mass / volume

Density = ?

Mass = 2.331g

Volume = ?

Length of the side = 1.5cm

Volume of a cube = L³

Volume of the cube = 1.50³

Volume = 3.375cm³

Density = mass / volume

Density = 2.331 / 3.375

Density = 0.691g/cm³

b) since the question doesn't require submitting a diagram, I would go ahead and answer it without any but explaining the basics for you.

Densities:

Liquid A = 1.004g/cm³

Liquid B = 0.6223g/cm³

Cube = 0.691g/cm³

If the three substance don't mix and are place in a granulated cylinder,

Liquid A would be at the bottom

Liquid B would stay at the middle

The cube would be at the top

Reason is that, when two immiscble liquid are placed in a container, the liquid with the higher density will stay at the bottom while that of lower will float on top.

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3 years ago
A redox reaction is set up so that both half reactions take place in separate beakers that are connected by a salt bridge and a
stealth61 [152]

Answer:

Salt bridge

Explanation:

Salt bridge is used in an electrolytic cell to transfer electrons from the anode to the cathode.

Salt bridge are used because they do not interfere with the constituents of the cell I.e the anode (+very electrode) and cathode(-ve electrode).

Examples of salt bridges are AgNO₃, KCl etc.

Salt bridge can be described as a tool used to link the oxidation half cell and reduction half cell in an electrolytic set-up or galvanic cell.

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