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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)”

Assignments can be reopened, if I miss the due date because I was at work.

Nitrogen combines with lithium as shown below.  If we want to produce 3.60 mol of lithium nitride, how many moles of lithium would we need to start with? (Nitrogen is in excess.)             6Li(s) + N2(g)  →  2Li3N(s)

If a solution is prepared by diluting 40.0 mL of 0.200 M CsCl to 250.0 mL, what is the new solution’s concentration in molarity?