When 0.2006 g of oxalic acid (C2O4H2) is burnt in the calorimeter whose heat capacity is 1.238 kJ/K. the temperature increased by 0.4577 K. Calculate the heat of combustion of oxalic acid in kJ per mole.

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)

How many neutrons does a atom of cobalt have?

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space