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3 years ago

The distance between any two successive places where the shape of the wave repeats itself

Chemistry

2 answers:

Anit [1.1K]3 years ago

5 0

Wave length is the answer.

Sidana [21]3 years ago

4 0

Answer:

B: wavelength

Explanation:

A <em>wavelength</em> (λ) is the distance between any two successive places where the shape of the wave repeats itself.

It can be the distance between

two consecutive peaks
two consecutive troughs
three consecutive nodes (zero-crossings of the horizontal axis)

The <em>wave</em> is all these repeating units joined together in sequence.

A <em>hertz</em> is a unit of frequency, and a <em>decibel </em>is a measure of the loudness of a sound wave.

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3 years ago

Under which of the following conditions would a chemical reaction most likely proceed at the fastest rate?

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<h2>Answer:</h2>

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3 years ago

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While exploring a coal mine, scientists found plant fossils in the ceiling of the mine which had been preserved by an earthquake

ale4655 [162]

Answer:

11552.45 years

Explanation:

Given that:

Half life = 5730 years

$t_{1/2}=\frac{\ln2}{k}$

Where, k is rate constant

So,

$k=\frac{\ln2}{t_{1/2}}$

$k=\frac{\ln2}{5730}\ years^{-1}$

The rate constant, k = 0.00012 years⁻¹

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given that:

The rate constant, k = 0.00012 years⁻¹

Initial concentration $[A_0]$ = 160.0 counts/min

Final concentration $[A_t]$ = 40.0 counts/min

Time = ?

Applying in the above equation, we get that:-

$40.0=160.0e^{-0.00012\times t}$

$e^{-0.00012t}=\frac{1}{4}$

$-0.00012t=\ln \left(\frac{1}{4}\right)$

$t=11552.45\ years$

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3 years ago

What is the answer for N2O

charle [14.2K]

Answer:

Nitrous Oxide = N20

Explanation:

8 0

2 years ago