Use the ellingham diagram to calculate the Gibbs free energy of the reaction 2Mn + O2 = 2MnO at 800 degrees Celsius

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Match the formula for the following compound:   magnesium sulfate heptahydratemgs·7h2omg2so4·7h2omg(s o4)2·7h2omgso4·7h2o

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes or no?