Name___________________________________________

SSN#___________________________________________

1. How much heat is required to raise the temperature of 37.15 g H

a) 1.50 kJ | b) 2.11 kJ | c) 4.18 kJ | d) 7.31 kJ | e) 8.85 kJ |

P

What is DH for the following reaction:

2P

a) 3677 kJ | b) -3677 kJ | c) 7354 kJ | d) -7354 kJ |

e) -1839 kJ |

H

Make use of the following known thermochemical equations:

2H

2H

a) 52.1 kJ | b) -52.1 kJ | c) 287.8 kJ | d) -287.8 kJ | e) 104.2 kJ |

CaCl

To determine the DH of this reaction, 23.60 g of CaCl

a) -21.17 kJ | b) 21.17 kJ | c) -46.53 kJ | d) 46.53 kJ | e) -81.05 kJ |

CaCO

a) -3811.4 kJ | b) -83.0 kJ | c) -39.0 kJ | d) 561.0 kJ | e) 652.1 kJ |

SUBSTANCE | DH_{f} |
---|---|

HCO_{3}^{-}(aq) | -691.1 kJ/mol |

Ca^{2+}(aq) | -543.0 kJ/mol |

CaCO_{3}(s) | -1206.9 kJ/mol |

CO_{2}(g) | -393.5 kJ/mol |

H_{2}O(l) | -285.8 kJ/mol |

6. What is the wavelength of light that has a frequency of 4.453 x 10

a) 185.7 nm | b) 255.8 nm | c) 385.3 nm | d) 491.7 nm | e) 673.2 nm |

a) 1.289 x 10^{-48} J | b) 3.405 x 10^{-19} J | c) 1.401 x 10^{-18} J | d) 4.728 x 10^{-16} J |

e) 2.115 x 10^{-15} J |

8. If an electron in a hydrogen atom makes a transition from the n=6 state to the n=2 state, what is the wavelength of the emitted light?

a) 97.2 nm | b) 102.5 nm | c) 410.1 nm | d) 486.0 nm | e) 656.1 nm |

a) the energy of an electron in a hydrogen atom

b) the geometric shape of an orbital

c) which particular orbital within the sub-shell you are dealing with

d) the direction of the electron's spin

10. The m

a) the energy of an electron in a hydrogen atom

b) the geometric shape of an orbital

c) which particular orbital within the sub-shell you are dealing with

d) the direction of the electron's spin

11. The m

a) the energy of an electron in a hydrogen atom

b) the geometric shape of an orbital

c) which particular orbital within the sub-shell you are dealing with

d) the direction of the electron's spin

12. The n quantum number specifies

a) the energy of an electron in a hydrogen atom

b) the geometric shape of an orbital

c) which particular orbital within the sub-shell you are dealing with

d) the direction of the electron's spin

13. All quantum numbers must have integer values EXCEPT:

a) n | b) l | c) m_{l} | d) m_{s} |

a) n only | b) n and l | c) n and m_{s} | d) l and m_{l} | e) m_{s} only |

a) n only | b) l only | c) m_{l} only | d) both n and m_{l} | e) both l and m_{l} |

a) -2 | b) -1 | c) 0 | d) 1 | e) 2 |

a) n must be less than 3

b) n must be equal to 3

c) n must be greater than 3

d) n must be equal to 4

e) n must be greater than 4

18. Which of the following is a legal set of quantum numbers for an electron in an atom?

a) n = 2, l = 0, m

b) n = 1, l = 1, m

c) n = 4, l = 2, m

d) n = 4, l = 1, m

e) n = 0, l = 0, m

19. Which of the following is NOT a legal set of quantum numbers for an electron in an atom?

a) n = 5, l = 3, m

b) n = 3, l = 2, m

c) n = 4, l = 1, m

d) n = 1, l = 0, m

e) n = 6, l = 3, m

20. What is the value of the l quantum number for any s orbital?

a) 0 | b) 1 | c) 2 | d) 3 | e) 4 |

a) K | b) L | c) s | d) p | e) d |

a) 0 | b) 1 | c) 2 | d) 3 | e) 4 |

a) K | b) s | c) N | d) s | e) f |

a) 1 | b) 2 | c) 3 | d) 4 | e) 5 |

a) Atoms generally require 8 electrons in order to fill their valence shell.

b) If a set of orbitals all have the same energy, then each orbital in the set must be occupied by one electron before any pairing of electrons will occur in those orbitals.

c) No two electrons in the same atom can have all four of their quantum numbers the same.

d) The total mass remains constant during a chemical reaction.

e) If a chemical reaction is the sum of two other chemical reactions, the DH of that reaction is the sum of the DH values of those two other chemical reactions.

ANSWERS:

1 d 2 d 3 a 4 e 5 c

6 e 7 b 8 c 9 b 10 c

11 d 12 a 13 d 14 d 15 c

16 d 17 c 18 c 19 b 20 a

21 d 22 d 23 a 24 b 25 c