(Based on PS 3.7)What is the empirical (simplest) formula and molar mass of ammonium nitrite?

(Based on PS 7)Which of the following Lewis dot structures is NOT correct? 

Let’s play Jeopardy. (For those not from this country or planet who are not familiar with Jeopardy, it is a game in which, rather than being asked a question for which you have to find the answer, instead you are given an answer and have to find the correct question which matches the answer.)The answer is 3. What is (are) the question(s)?

(Based on ME 2)The most electronegative atom on the periodic table is _______ and belongs to the family of ________.

(Based on SW 8)How many grams of each element (carbon and sulfur, in that order) are present in 38 g of carbon disulfide?

Draw the Lewis Dot Structure of ammonia on your scratch paper. The number of single covalent bonds and lone pairs on the molecule are, respectively, __ and __, and the molecule ____ a free radical.

(Based on ME 3)On a piece of scratch paper, draw the Lewis electron dot structure of FHCO, in which F, H, and O atoms are covalently bonded to a central C atom. How many single bonds, double bonds, and lone pairs are there in the molecule?

(Based on PS 5.2)The iron(III) ion (i.e. Fe3+) is _____ and has the electron configuration ____.

(Based on PS 1.2)A sample with a mass of 21.78340 g is weighed using an electronic balance that is accurate to ± 0.2 mg. How many significant figures should you write down in your lab book if you were doing an experiment and weighed the sample with this balance?

How many grams of chloride are in 153g of calcium chloride? [grams]   What is the percent weight of chloride in calcium chloride? [weight] %