A youth organization is having its annual pinewood model car race. The unpowered cars, like the one shown below, are lined up at
the top of a hill and ready to begin.
What gives the cars their potential energy?
A.
gravity
B.
their speed
C.
friction
D.
their wheels
What gives the cars their potential energy?
A.
gravity
B.
their speed
C.
friction
D.
their wheels
1 answer:
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<u>Answer:</u> The concentration of hydrogen gas at equilibrium is
<u>Explanation:</u>
We are given:
Initial moles of hydrogen sulfide gas = 0.47 moles
Volume of the container = 3.0 L
The molarity of solution is calculated by using the equation:
So,
The given chemical equation follows:
<u>Initial:</u> 0.1567
<u>At eqllm:</u> 0.1567-2x 2x x
The expression of for above equation follows:
We are given:
Putting values in above equation, we get:
So, equilibrium concentration of hydrogen gas =
Hence, the concentration of hydrogen gas at equilibrium is
Explanation:
The first wave was found to have a wavelength of 3 x 10⁵ m and the second wave had a wavelength of 3 x 10⁴ m
We need to find which wave have a higher frequency.
The relation between frequency and wavelength is given by :
Let f₁ and f₂ be the frequency of wave 1 and wave 2.
And
Hence, the wave having less wavelength will have higher frequency. The wave having wavelength 3 x 10⁴ m will have higher frequency.