Answer : The number of moles of 
and mass of is 0.50 mole and 27 grams respectively.
Solution : Given,
We are assuming that the reactant indicated in boldface is 
. So,
Moles of = 0.50 mole
Molar mass of = 53.5 g/mole
First we have to calculate the moles of
The balanced chemical reaction is,
From the reaction, we conclude that
As, 1 mole of react to give 1 mole of
So, 0.50 moles of react to give 0.50 moles of
The number of moles of is, 0.50 moles.
Now we have to calculate the mass of
The mass of is, 27 grams.
<u>Answer:</u> The frequency of the radiation is 33.9 THz
<u>Explanation:</u>
We are given:
Wave number of the radiation, 
Wave number is defined as the number of wavelengths per unit length.
Mathematically,
where,
= wave number = 
= wavelength of the radiation = ?
Putting values in above equation, we get:
Converting this into meters, we use the conversion factor:
1 m = 100 cm
So, 
- The relation between frequency and wavelength is given as:
where,
c = the speed of light = 
= frequency of the radiation = ?
Putting values in above equation, we get:
Converting this into tera Hertz, we use the conversion factor:
So, 
Hence, the frequency of the radiation is 33.9 THz
<span>The answer is Mandy’s solution is a
Base/Alkaline solution. Alkaline solution turns
red litmus blue while acidic solution turns
blue litmus red. In acidic solution, the red litmus remains red while in
alkaline solution, the blue litmus remains blue. However, litmus paper can never tell you the exact pH
number of a solution</span>
