Which of the following elements is a metal?
a. boron
c. magnesium
b. nitrogen
d. carbon

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.

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?