There is acetone, xylene, and toluene in spray paint
The answer is b
Explanation:
The frequency of a photon of red light with wavelength 4.50 x 10−7m is 6.67 x 1014Hz
I can give you a clue of getting mass. if it is the atomic number is even multiply by 2 but if the atomic number is odd multiply by 2 and add 1
sodium atomic number = 11 so mass = 11*2 +1 = 23
oxygen. atomic number = 8 so mass = 8*2 = 16
carbon atomic number = 6 so mass = 6*2 = 12
