Certain solution has [oh-] = 4 x 10-3. calculate the concentration of [h3o+] and the ph of the solution

Based on the equation and the information in the table, what is the enthalpy of the reaction?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false