Calculate the frequency of visible light having a wavelength of 486 nm

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

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.