A piece of rock has a mass of 2.00g. It contains calcium carbonate, but no other substances. It neutralises exactly 36.0 cm of 0.500 moldmhydrochloric acid.
What is the percentage of calcium carbonate in the 2.00 g piece of rock?

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.