the answer is 0.0693769. 6.02x10^21 x6.94/ 6.022x10^23 is the formua you would use.
The answer is 5 hours 45 minutes
I feel that it is D but I am not 100% sure sadly.
The valence electrons determine how reactive an element is, and since Sodium and other alkali metals could easily lose an electron, they become very reactive to be stable.
Answer:
Visible light spectrum is a part of electromagnetic waves. The colors of the visible light spectrum are organised on the basis of their wavelength and frequency.
As the light or color having high frequency will have the shorter wavelength and vice versa, so colors in visible light spectrum arranged from highest frequency to lowest frequency or from shortest wavelength to highest wavelength. For example: The highest frequency color is violet and lowest frequency of visible light is red.
