In the waves lab, you changed ______ to see how it would affect wave speed.
2 answers:
Answer: The correct answer is "medium".
Explanation:
The expression for the relation between the speed of the wave and frequency is as follows;
Here, v is the speed of the wave, f is the frequency of the wave and is the wavelength of the wave.
There is an inverse relationship between the frequency and wavelength. If the frequency of the wave increases then the wavelength of the wave decreases while the speed of the wave remains constant.
The properties of the wave can be described by amplitude, wavelength and frequency but the speed of the wave depends on the medium through which it is moving. The medium may be denser or rarer according to it the speed of the wave will vary.
Therefore, in the waves lab, you changed medium to see how it would affect wave speed.
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Explanation:
(a) Chlorine the first row Is 1s the second is 2s followed by 2p...etc as Chlorine has 17 electrons
<u>Answer:</u> The pH of the resulting solution will be 3.60
<u>Explanation:</u>
Molarity is calculated by using the equation:
......(1)
We are given:
Molarity of formic acid = 0.100 M
Molarity of potassium formate = 0.100 M
Volume of solution = 420 mL = 0.420 L (Conversion factor: 1 L = 1000 mL)
Putting values in equation 1, we get:
Molarity of KOH = 1.00 M
Volume of solution = 7 mL = 0.007 L
Putting values in equation 1, we get:
The chemical equation for the reaction of formic acid and KOH follows:
I: 0.042 0.007 0.042
C: -0.007 -0.007 +0.007
E: 0.035 - 0.049
Volume of solution = [420 + 7] = 427 mL = 0.427 L
To calculate the pH of the acidic buffer, the equation for Henderson-Hasselbalch is used:
.......(2)
Given values:
Putting values in equation 2, we get:
Hence, the pH of the resulting solution will be 3.60