Electronegativity values are useful in determining if a bond is to be classified as nonpolar covalent, polar covalent or ionic. Consider the following chemical compounds. Which compound exhibits polar covalent bonds and why? A) NaCl; ionic bond EN = 2.1

B) SO; polar covalent EN = 1

C) CH; non-polar covalent EN = .04

D) H2; polar covalent EN = 0

Hannah is writing a report on how albedo affects the global climate. she’s proofreading her passage for any factual errors. which sentence must hannah correct before submitting her report? earth receives energy from the sun. this energy drives many of the processes on earth, including its climate. some part of this energy is reflected by earth’s surface. we use the term albedo to describe the reflected energy. albedo of an object is the ratio of the reflected radiation to the total radiation reaching the object. a value of 0 means no energy is absorbed by the object, whereas a value of 1 means that all of the energy is absorbed. in this way, the albedo of an object can influence earth’s atmospheric temperature.

Evaluate this exponential expression,8. (2 + 3)2 – 42

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%