If you need to measure the mass of a greeting card you are sending to a friend through the mail, what unit of measurement would you use

There are main groups in the modern periodic table of elements

What is an example of a physical property?

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.