How do I calculate density?
A piece of wood w/ volume 2.5 L and mass of 12.kg
with a volume of 3.91 x10-7 L and a mass of 7.93 x 10 -1 ng
How to calculate the average atomic mass of the elements in amu units
Isotope 39K % Abundance 93.2581 % Mass (amu) 38.9637
Thank you in advance for any assistance you can provide.