How many protons and neutrons are in one atom of \begin{matrix}30\\14\end{matrix} 30 14 si?

Protons = 14 Neutrons = 16 This is an isotope of silicon. The 30 is the sum of the number of protons and neutrons in silicon. The 14 is simply the atomic number of silicon which is 14. So the number of neutrons is 30 - 14 = 16. So the answer is: Protons = 14 Neutrons = 16

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water