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

Consider the point on the plot where 10.0 g of naoh have been added. what amount of naoh, in moles, has been added? 0.308 mol fecl3 initially present

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '