Write the ions present in a solution of K2CO3K2CO3. Express your answers as chemical formulas separated by a comma. Offset subscripts and charges on each ion.

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

Rn in the right answer

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

A, it is falling action my have a good day