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NNADVOKAT [17]
3 years ago
12

I WILL DIE I HAVE A KNIFE IN MY HAND. ANSWER WITH EXPLANATION. If the sound is high pitched, then the wave's frequency would hav

e a:
A.high frequency, short wavelength


B. high frequency, long wavelength


C. low frequency, long wavelength


D. low frequency, short wavelength
Chemistry
1 answer:
enyata [817]3 years ago
3 0

Answer:

Option A - High frequency, short wavelength.

Explanation:

<em>If the sound is high then the frequency is also high but short-wavelength means lots of waves that always have a high pitch-sound and a high frequency. </em>

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pantera1 [17]

Answer:

2.2 moles

Explanation:

n = CV

n = 0.4×5.50

n=2.2 moles

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When heat is applied to water a 10 degrees Celsius, what does the energy transform into?
LUCKY_DIMON [66]

Answer:

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Explanation:

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3. A girl<br> ran 105 metres in 15 seconds. What was her speed
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Answer:

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2 years ago
If you have 16 g of manganese (II) nitrate tetrahydrate, how much water is required to prepare 0.16 M solution from this amount
Schach [20]

<u>Answer:</u> The amount of water required to prepare given amount of salt is 398.4 mL

<u>Explanation:</u>

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Molarity of solution = 0.16 M

Given mass of manganese (II) nitrate tetrahydrate = 16 g

Molar mass of manganese (II) nitrate tetrahydrate = 251 g/mol

Putting values in above equation, we get:

0.16M=\frac{16\times 1000}{251\times \text{Volume of solution}}\\\\\text{Volume of solution}=\frac{16\times 1000}{251\times 0.16}=398.4mL

Volume of water = Volume of solution = 398.4 mL

Hence, the amount of water required to prepare given amount of salt is 398.4 mL

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