From the basics conversions:
1 nanogram is equivalent to 1 * 10^-15 megagrams
To convert 7.02 * 10^-10 nanograms to megagrams, all you have to do is cross multiplication as follows:
1 nanogram ................> 1 * 10^-15 megagrams
7.02 * 10^-10 nanograms ...............> ?? megagrams
megagrams = (7.02*10^-10 * 1*10^-15) / (1) = 7.02 * 10^-25 megagrams
Two [hydrogen] atoms and one [oxygen] atom
To dilute a solute in a solution, it is necessary to add a proper solvent for the reaction to occur, and adding more solvent will cause the solution to dilute even more, therefore the best answer will be letter B
Answer:
It gives the number of protons in the nucleus of each atom of that element.
Explanation:
