Answer:
Frequency = Velocity / Wavelength = 100 m/s / 20 m = 5 s-1 or 5 Hz.
Explanation:
Answer: 3.5 moles of hydrogen gas will be produced.
Explanation:
The balanced chemical equation is:

As HCl gets completely used up,
is the limiting reagent.
According to stoichiometry :
6 moles of
produces = 3 moles of
Thus 7.0 moles of
produces=
of
Thus 3.5 moles of hydrogen gas will be produced.
<h3>
Answer:</h3>
272.43 K or -0.718°C
<h3>
Explanation:</h3>
We are given;
The initial pressure,P1 as 761 mmHg
Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K
Final pressure as 759 mmHg
We are required to calculate the final temperature;
According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.
That is; Pα T
Therefore, at varying pressure and temperature,

To get final temperature;



Therefore, the final temperature will be 272.43 K or -0.718°C