Help me with this.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

How long could you survive without electricity? what parts of your life would be affected by loss of electricity? should you prepare for an electricity outage, and if so, how would you prepare? what backup system could your family or community install to generate limited amounts of electricity during an outage? how does this system create an electric force field and generate electric current?