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Determine the number of protons, neutrons and electrons in the following isotopes.  Which isotope contains 20 neutrons?  Isotope Protons Neutrons Electrons 80Se2-       Xenon-131        39K+       Copy the box containing your answers on your sheet of paper. Right after submitting your exam, upload your photos to the Assignment Box, “Calculations for Exam 1 (Chapter 1,2)”

Arteri/o means artery. The word that means rupture of an artery is:

What is the name of BBr3?

Which pair(s) of compounds do NOT have the same empirical formula? C2H6, C3H6{“version”:”1.1″,”math”:”C2H6, C3H6″} C2H2, C6H6{“version”:”1.1″,”math”:”C2H2, C6H6″} FeCl2, FeCl3{“version”:”1.1″,”math”:”FeCl2, FeCl3″} C2H4O2, C6H12O6{“version”:”1.1″,”math”:”C2H4O2, C6H12O6″} C2H5COOCH3, CH3CHO{“version”:”1.1″,”math”:”C2H5COOCH3, CH3CHO”}

The Canadian Pacific Railroad was completed when?

Who is responsible for dropping a course if a student decides to withdraw?

If matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a(n) __________.

The goal of the United Nations is to keep world peace and security.

In charge of an expedition sponsored by King Ferdinand and Queen Isabella of Spain, he sailed west in 1492 and landed with Taino inhabitants at San Salvador whom he called “Indians” mistakenly believing he was in Asia.

Balance the following reaction and determine the moles of aluminum needed to react with 2.5 moles of iodine. Al + I2 → AlI3 Write out your calculations and answers clearly, with all numbers labeled correctly, on a piece of paper.  Right after submitting your exam, upload your photos to the Assignment Box, “Calculations for Exam 2 (Chapter 3)”