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pishuonlain [190]
2 years ago
6

A wave of infrared light has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave?

Biology
2 answers:
frutty [35]2 years ago
7 0

Answer:

A. 0.5 Hz.

Explanation:

I know you got the answer, but plz mark me as brainliest. I need a lot of those.

Bad White [126]2 years ago
4 0

Answer:

Explanation:

The frequency of the wave is 0.5 hertz.

La frecuencia de la onda es de 0,5 hercios.

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How many grams of the compound in the figure above are required to make 1 liter of a 0.5 M solution? (Note: The atomic masses, i
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Answer:

This question is incomplete as there is no figure in the question but the compound in the figure is Ethanoic acid (CH3COOH). Hence, we can calculate the mass.

The answer is: 30grams

Explanation:

According to the question, the volume of the compound (CH3COOH) is 1litre while the molar concentration is 0.5M

Molarity or Molar concentration is calculated using the formula:

M= n/V

Where; M= Molarity (M) = 0.5M

n= number of moles (mol)

V= Volume (V) = 1L

Hence, number of moles (n) = M × V

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n = 0.5 moles.

To calculate the mass in grams of CH3COOH, we say;

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Since atomic mass for (C= 12, H= 1 and O=16)

Molar mass of CH3COOH:

= 12 + 1(3) + 12 + 16 + 16 + 1

Molar mass of CH3COOH = 60g/mol

Mass (in grams) of CH3COOH = 0.5 moles × 60g/mol

Mass = 30grams.

Therefore, 30grams of CH3COOH compound are required to make 1 liter of a 0.5 M solution.

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