Given the following balanced reaction of hydrogen peroxide decomposing to form oxygen gas and water, how many moles of oxygen gas, O2, are produced from 0.980 moles of hydrogen peroxide? 0.490 mol
0.50 mol
1.96 mol

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.