A set of headphones produces sounds that cancel out sound waves from the

Chemistry

1 answer:

Basile [38]3 years ago

4 0

Answer:

C. Destructive interference

Explanation:

<em>Destructive interference</em> is when there are two waves <u>with the same frequency</u>, and the peaks of one wave (the highest points) line up with the valleys (the lowest points) of the second one.

Constructive interference would cause the sound to be louder.

Absorption and reflection are interactions that would not take into account the fact that the headphones produce sounds.

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How many moles are in 260g of Al2(SO3)3 x 4H20

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M=260 g
M=414.215 g/mol

n=m/M

n=260 g / 414.215 g/mol = 0.6277 mol

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Baking soda (nahco3) is an active ingredient in some antacids. determine the percent composition of oxygen in baking soda.

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Assuming the question is asking for percent composition by mass,

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Answer:

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3 years ago

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Answer:

Explanation:

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Draw the mechanism of the slow step that occurs in both first-order substitution and first-order elimination reactions for (R)-3

BartSMP [9]

Answer:

see explaination

Explanation:

We are given the (R)-3-bromo-2,3-dimethylpentane and asking to draw the curved arrow which is the showing the mechanism for first-order substitution and first-order elimination reactions. We know the formation of carbocation is the rate determining step in the first-order substitution and first-order elimination reactions.

So in the (R)-3-bromo-2,3-dimethylpentane there is –Br gets removed and formed the tertiary carbocation which is more stable, so the curved arrows in Box 1 to depict the flow of electrons and intermediate in Box 2.

Check attachment

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