If atoms in a regular three-dimensional solid are about 10−10m apart, what is the orderof magnitude estimate of the number of atoms in a cube with sides of length 10−2m?(Enter the exponentnfrom your answer of 10n.)(a) 36(b) 24(c) 12(d) 8

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.

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .