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Aleonysh [2.5K]
2 years ago
6

How to find frequency​

Chemistry
1 answer:
ale4655 [162]2 years ago
3 0

Answer:

f = V / λ

Explanation:

In this formula, f represents frequency, V represents the velocity of the wave, and λ represents the wavelength of the wave

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HELP!!! TIMED! THANK YOU!
Bess [88]

Answer:

The answer is A.

Explanation:

8 0
3 years ago
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What accounts for the majority of all air pollution? Is that source increasing or decreasing overall?
lianna [129]
Hi there!

One of the main causes of air pollution is smoking.

Smoking affects not only humans, but pets and animals as well. Animals can get cancer too!

Another big cause of pollution is cars. Gasoline of course comes out into the air after it is used. It also affects animals.

A lot of people know that we should change this, but hardly anyone is really doing anything to try and stop it.

I know this is a short answer, but I hope it helps!
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3 years ago
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Two easy uses of mixture​
lyudmila [28]

Explanation:

it helps to make juices.

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3 years ago
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This table has information about the heat of fusion and the heat of vaporization of different substances. A 3-column table with
blagie [28]

H₂S

<h3>Further explanation</h3>

Given

ΔH fusion and ΔH vaporization  of different substances

Required

The substance absorbs 58.16 kJ of energy when 3.11 mol vaporizes

Solution

We can use the formula :

\tt \Delta H=\dfrac{Q}{n}

Q=heat/energy absorbed

n = moles

The heat absorbed : 58.16 kJ

moles = 3.11

so ΔH vaporization :

\tt \Delta H_{vap}=\dfrac{58.16~kJ}{3.11~mol}\\\\\Delta H_{vap}=18.7~kJ/mol

The correct substance which has ΔH vaporization = 18.7 kj / mol is H₂S

(H₂S from the data above has ΔH fusion = 2.37 kj / mol and ΔH vaporization = 18.7 kj / mol)

3 0
3 years ago
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The DEA has designated five chemicals often found in spice as _____ controlled substances, making it illegal to sell, buy, or po
Mrrafil [7]

Answer:

I'm pretty sure this doesn't really connect with chemistry much but the answer should be <u>Schedule 1 </u> as stated by the Drug enforcement agency.

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