How do you determine which formula for a compound is not a correct formula?
For example, this is my problem I'm trying to Which of the following is NOT a correct formula?
These are my options:
-Mg2HPO4
-HCIO4
Fe(CIO2)3
Fe(CIO2)3
Ca(NO2)2
Lil
H3PO4

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?