What is the percentage yield of o2 is 12.3 G of kclo3 is decomposed to produce 2.2 grams of o2 according to the equation above

Compare and contrast physical changes with chemical changes.

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2