Which of the following is a properly balanced equation? 1. 2 C3H12 + 8 O2 --> 5 CO2 + 6H2O

2.Cu + AgNO3 --> Cu(NO3)2 + Ag

3.2 Al + O2 --> Al2O3

4. 3 CO + Fe2O3 --> 2 Fe + 3 CO2

One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

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.