Answer:
a)
and 
b)
and 
c)
and 
Explanation:
Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like
,
and
These units of temperature are inter convertible.



a) 68°F (a pleasant spring day) to °C and K.
Converting this unit of temperature into
and
by using conversion factor:



b) 164°C (the boiling point of methane, the main component of natural gas) to K and °F
Conversion from degree Celsius to Kelvins and Fahrenheit



c) 0K (absolute zero, theoretically the coldest possible temperature) to °C and °F.




The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
The Yellow Book. The yellow book is the object that reflects light with the longest wavelength. In the visible spectrum the color with the shortest wavelength is violet while the longest is red
Answer:
Na k
Explanation:
because na is a metal and potassium is also a metal and both are active metal so is less likely to react as no bond is formed between them
SI unit of frequency is Hertz(Hz)