Need the ionic formula

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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.