3 years ago

Methane, CH4, is an organic compound and a hydrocarbon. a. True b. False

1 answer:

4 0

Methane (CH4) is an organic compound an a hydrocarbon. The statement above is a fact and therefore the answer to the question is letter "A" or "A.True". I hope this helps you on your assignment.

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Beer's Law states that A=ebc, where A is the absorbance, ε is the molar absorptivity of the solute, b is the path length, and c

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Answer:

b. changing the compound changes the absorbance behavior.

Explanation:

Option a) would be akin to modifying the path length, b.

Option b) would involve using a different solute, as such, there would be another molar absortivity, ε.

Option c) would decrease the concentration (c) of the solute, which would explain why the absorbance would decrease as well.

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3 years ago

A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is mad

bogdanovich [222]

5.5g times ( 1-.35 )

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4 years ago

True or false: In a chemical reaction, atoms of elements cannot be present in the products if they were not present in the react

Amanda [17]

Answer:

Explanation: Your answer is A true

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3 years ago

How does changing the temperature affect the chemical reaction?

tiny-mole [99]

The correct answer is C) Raising the temperature increases reaction rate by increasing the energy of the reacting atoms/ions/molecules and increases the number of collisions.

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3 years ago

The amino acid isoleucine has pKa values of 2.32 (–COOH) and 9.76 (–NH3+). What is the predominant form of the amino acid at pH

Aneli [31]

Answer:

PI = 6.04

In the attached figure are the missing hydrogen atoms

Explanation:

Given both pk, the isoelectric point will be equal to:

PI = (1/2)*(pka + pka2), where pka = 2.32 and pka2 = 9.76

PI = (1/2)*(2.32 + 9.76) = 6.04

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3 years ago