How does radiation differ from conduction? a) radiation can move through empty space to transfer heat; conduction cannot. b) radiation needs a medium in order for heat to transfer; conduction does not. c) radiation requires objects to have direct physical contact; conduction does not. d) radiation transmits heat by circulating particles in an object; conduction does not.

Calculate the number of molecules present in 0.750 mol of mgo.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.