With ocean ph dropping what are some factors that could be contributing to this problem

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?