A- a student has 10.0g sample of CaBr2. Show the setup of the calculation to determine the number of moles of CaBr2 in the sample include units in the setup .(you do not need to do any calculations) B- what number in addition to the answer to part A is needed to determine the number of atoms of Ca in the sample?

C-a different student is given a 10.0g sample labeled CaBr2 that may contain an inert (non reacting) impurity, identify a quantity from the results of a laboratory analysis that the student could use to determine whether the sample is pure.

D-explain why CaCl2 is likely to have properties similar to those of CaBr2

What does earth’s rotation on its axis cause? the tides night and day passing of years phases of the moon

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.

0.09 moles of sodium sulfate in 12 ml of solution