The correct name for the molecular compound N2O4 is

Use the factor-label method to solve the following stoichiometry problem.   Given the following equation: 1 C3H8  +  5 O2    3 CO2  +  4 H2O How many molecules of oxygen are required to react with 25.4 grams of C3H8? To receive full credit:  You must use the factor unit method and the math equation editor in the tool bar to insert the stoichiometric calculation.  Be sure to include proper units and the final answer.  Or, show your work on a separate sheet of paper and submit in the Unit 2 Exam pictures dropbox after completing the Exam. 

How does the kinetic energy of a particle change if the particle’s temperature is increased?

On a separate sheet of paper, draw the Lewis dot structure for PBr3.  After completing the exam, upload your picture in the Unit 2 Exam pictures dropbox. 

When a nonmetal forms an ion, will the charge on the ion be positive or negative?

Determine the oxidation number of the underlined element in the following compound. Be sure to indicate if the oxidation number is positive or negative. NaNO3

In an endothermic reaction, is heat absorbed or is heat given off?

A high diffusion rate is characteristic of what state of matter?

Determine the oxidation number of the underlined element in the following compound. Be sure to indicate if the oxidation number is positive or negative. NaNO3

Look at the heating/cooling curve for water diagrammed below. Between which two letters is the phase changing of condensation taking place? Response should be in the form “x and y”.