Im unsure :( maybe try looking up a calorie calculator
They're metals and they are in the same group/family
Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes
hope this helps :)
0.000735 in scientific notation is 7.35 x 10^-4
