In order for radiation to transfer heat, electromagnetic waves must be transmitted objects must be in direct physical contact particles must circulate and move in a liquid or gas thermal energy must move from cold to hot objects I don't really know if this is chemistry, but help please

Which compound contain an iron with a 3+ charge

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)