A 16.0 gram sample of propane gas (C3H8) is burned according to the equation C3H8(g) + 5O2(g) –> 3CO2(g) + 4H2O(g) In an enclosed container with a volume of 2.25 L at a temperature of 322 K. a. If the sample of propane burns completely and no oxygen remains in the container, calculate the mole fractions of CO2 expressed as a decimal with 3 significant figures.

A student attempting to determine the density of an unknown liquid collects the following data Mass  (g)                  Volume  (mL) 8.709                       12.0 12.352                     17.0 16.345                     22.5 Calculate the average density

S 2- , K+ , and Ti 4+ can be considered isoelectronic in their valence shell.

“The pressure of an ideal gas is inversely proportional to its volume at constant temperature and number of moles” is a statement of __________________ Law.

The bond type for FeTi is

Given  O(g) + e–(g) –> O–(g)    ∆Hº = –142 kJ mol–1 O(g) + 2 e–(g) –> O 2– (g) ∆Hº = +702 kJ mol–1 What is ∆Hº for the following reaction? O–(g) + e–(g) –> O 2– (g)

What is the geometry of ICl4–  according to VSEPR theory?

Which of the following sets of quantum numbers n, l, ml, ms correspond to a valence electron in a neutral atom of arsenic (As)?

Which statements about the Lewis structure of the fulminate ion, CNO–, are correct? I.  The nitrogen atom has a positive formal charge. II.  The nitrogen atom has a lone pair of electrons

Which halogen has the greatest first ionization energy?