10.8g of Al reacts with excess of oxygen to form Al2O3 with 10%actual yield calculate its theoretical yield

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Which of the following electromagnetic waves can create ions?

What is the atomic number of an atom that has 6 protons