When a nonmetal bonds with a nonmetal: A. electrons are shared. B. a covalent bond is involved. C. a molecular compound forms. D. All of the above are true. E. None of the above are true. The attractions between anions and c...
In a hydrogen bond, a hydrogen atom forms a chemical interaction with an electronegative atom, e.g., nitrogen, oxygen, or fluorine. The hydrogen bond is the main reason for the elevated boiling point/melting point of polar protic solvents.Answer and Explanation: The given compound contains an ...
Why is bond formation an exothermic process while the breaking of bond is endothermic? Heat is liberated in which type of reaction? How can an endergonic reaction not be endothermic? Can energy be released during a chemical reaction? What is ...
Bottom: Elevation (i.e., the height above the mean sea level) in (m) over: Bottom-Left: the eight sub-regions of Africa: North Africa (NAF), Sahara (SAH), West Africa (WAF), Central Africa (CAF), North East Africa (NEAF), Central East Africa (CEAF), South East Africa (SEAF)...
Results show that the SAH, NEAF, and CEAF are expected to receive strong precipi- tation relative to the NAF, WAF, SWAF, and SEAF, which are likely to experience severe drought conditions. The emission scenario has a significant impact on the amount of rain that falls over Central Africa ...