Burning your tongue on hot toast is an example of heat transfer by:
1. radiation
2. conduction
3. convection
4. refraction

I believe the correct option would be conduction, hope this helps

The answer is 2. conduction which is heat transfer through 2 things touching

29.1-12=17.1the answer is this one

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