A 18.7 g piece of aluminum (which has a heat capacity of 0.89 J/°C-g) is heated to 82.4°C and dropped into a calorimeter containing water
(specific heat capacity of water is 4.18 J/gºC) initially at 22.3°C. The final
temperature of the water is 24.3°C. Ignoring significant figures, calculate
the mass of water in the calorimeter. *

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

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.

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?