4. Classify the bond between boron and chlorine given the following electronegativities: boron (2.04), chlorine (3.16). O a) metallic
Ob) non-polar covalent
Oc) ionic
O d) nonpolar ionic
O e) polar covalent

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]