Answer:
No photoelectric effect is observed for Mercury.
Explanation:
From E= hf
h= Plank's constant
f= frequency of incident light
Threshold Frequency of mercury= 435×10^3/ 6.6×10^-34 × 6.02×10^23
f= 11×10^14 Hz
The highest frequency of visible light is 7.5×10^14. This is clearly less than the threshold frequency of mercury hence no electron is emitted from the mercury surface
It indicates that there is only one oxygen molecule
Answer:

Explanation:
Hello
In this case, by considering the Raoult's law we can write:

Whereas the purpose is to compute the pressures of both methanol and ethanol (pressures above the solution), thus, the first step is to compute the molar fractions:

Therefore, the pressures turns out:

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17.031 g/mol Hope this helps you
Answer:
Well its not gonna work anymore and you will be able to all the wires in the earphones!
Explanation: