Balance the chemical equations: 4) Ag + H2S → Ag2S + H2 5) CH4 + O2 → CO2 + H2O 6) HgO → Hg + O2 7) Co + H2O → Co2O3 + H2

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Which of the following are correct values for the ideal gas laws constant r