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Which of the following would cause an aluminum atom to achieve a noble gas configuration?

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. 

When a liquid sample is taken from sea level to a higher elevation, what happens to the atmospheric pressure on the liquid and the boiling point of the liquid?

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

The correct formula of an ionic compound containing Fe+2 and (NO3)-1 is

Refer to the structural formula given below:  Phosphorus has an electronegativity value of 2.1 and chlorine has an electronegativity value of 3.0. Which atom, phosphorus or chlorine would be labeled partially 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

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

If the structure of a molecule is asymmetric (i.e. not symmetric), is the overall molecule polar or nonpolar?

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