Given this balanced equation: 1 K2CrO4 + 1 Pb(NO3)2 -> 1 PbCrO4 + 2 KNO3

If you want to make 28.49 moles of KNO3 , how many mole of Pb(NO3)2 do you need?

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?