Cumulative How many moles are in 47.3 g C4H9NO? Exact sig figs required. Use the periodic table provided: periodic table for tests.pdf Answer in mol. Do not type units, Do not use scientific notation.

How much energy is required to dissociate all the bonds in methylamine (H3CNH2)? Remember the formula is written to give you a hint on how the molecule is connected.   Table of Bond Dissociation Energies Bond Bond Dissociation Energy (kJ/mol) C-H 415 C-N 331 N-H 390. Answer in kJ/mol. Do not type units. Do not use scientific notation.

Use the dropdown menu to name each substance: NH4NO2 is [NH4NO2]. NaOCl is [NaOCl]. CoCl3 is [CoCl3].

48 g methane (CH4) is dissolved in liquid hexane to make 6.0 dm3 solution. (1dm3 = 1L) What is the molarity of CH4?  Answer in M. Do not use scientific notation. Do not type units. 

0.82 g of an unknown gas is placed in a 0.461 dm3 container at 319 K. The pressure is measured to be 2.81 atm. What is the molecular mass of the gas?  Answer in g/mol. Do not type units. Do not use scientific notation.

Cumulative  Balance: __FeCl3 + __HOCl –> __Fe3O4 + __Cl2 + __H2. The stoichiometric coefficient of FeCl3 is [FeCl3]. The stoichiometric coefficient of Cl2 is [Cl2].

Periodic Table: periodic table for tests.pdf (remember you can use the zoom in and out buttons). What is the molecular mass of BeCl2? Exact sig figs required. Answer in g/mol. Do not use scientific notation. Do not type units. Canvas may add leading or trailing zeros to your answer; these will NOT affect your grade.

14 g N2 is reacted with 38 g F2 by the reaction

Cumulative Every chemical in the following list is a base. Select all the weak bases. You may select more than one.

The surroundings does 37 J of work on the system. The system receives 23 J of work from the surroundings. The system emits 81 J heat. What is the change in internal energy of the system? Exact sig figs required. Answer in J. Do not use scientific notation. Do not type units.