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faltersainse [42]
3 years ago
9

THIS IS URGENT

Chemistry
2 answers:
vivado [14]3 years ago
6 0

Answer: A. wavelength

Explanation:

Wavelength is the distance between the two consecutive crests or troughs.

Frequency is the number of  vibrations in one second. It is also defined as the number of crests that pass a point in a given time.

Amplitude is the maximum extent of a vibration or oscillation measured from the position of equilibrium.

Loudness is the perception by an individual of how intense the sound is.

Therefore, the correct answer is wavelength.

strojnjashka [21]3 years ago
3 0
A. wavelength

wavelength is the distance between 2 crests of a wave
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Tanzania [10]

Answer:

The correct answer is option 2.

Explanation:

Colligative property is defined as property which depends upon only on the numbers of particles of solute dissolved in definite amount of  solvent, It do not depend on the nature of the solute.

For example : NaCl solution with 0.4 molal will show same colligative properties as a that of the glucose solution with 0.04 molal concentration.

The following are the examples of colligative property:

1. Relative lowering of vapor pressure.

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4. Depression in freezing point

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What equation explains the relation between amperes, watts and volts?
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The good ozone protects us from the UV/ harmful radiations whereas bad ozone is an air pollutant.

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Given:
bulgar [2K]

Answer:

The combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

Explanation:

Given;

CH₄ + 2O₂ → CO₂ + 2H₂O, ΔH = -890 kJ/mol

From the combustion reaction above, it can be observed that;

1 mole of methane (CH₄) released 890 kilojoules of energy.

Now, we convert 59.7 grams of methane to moles

CH₄ = 12 + (1x4) = 16 g/mol

59.7 g of CH₄ = \frac{59.7}{16} = 3.73125 \ moles

1 mole of methane (CH₄) released 890 kilojoules of energy

3.73125 moles of methane (CH₄) will release ?

= 3.73125 moles x  -890 kJ/mol

= -3320.81 kJ

Therefore, the combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

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