General Chemistry Answers

A 2.00 Liter container of nitrogen had a pressure of 3.20atm. What volume would it be 692 torr?

Oxygen gas is a temperature of 40 C when it occupies a pressure of 12.30 psi. To what temperature will it have at a pressure of 6.50 psi?

A sample of nitrogen occupies a volume of 250 mL at 25 C. What volume will it occupy at 0C?

A mixture of 50.0 g of nitrogen and 35.0 g of oxygen has a total pressure of 0.900 atm. What is the partial pressure of each gas?

How does a paperclip float on water? Use surface tension and intermolecular forces in your answer. Also how do intermolecular forces cause surface tension?

9. The antibiotic thiarubin-A was discovered by studying the feeding habits of wild

     chimpanzees in Tanzania. The structure for thiarubin-A is

a. Complete the Lewis structure showing all lone pairs of electrons.

b. Indicate the hybrid orbitals used by the carbon and sulfur atoms in thiarubin-A.

c. How many σ and π bonds are present in this molecule?

10. Match the following

        A                                                                    B

Body fluid component                                           Cu²⁺

Heme respiratory carrier                                       Ca²⁺

1.5 to 2% of body mass                                         Na⁺

Muscle and nerve control                                      K⁺

Cofactor in enzyme, e transfer                              Co³⁺

Vitamin B₁₂                                                            Fe²⁺

Heart muscle function                                           Mg²⁺

1. Use the localized electron model to describe the bonding in hydrogen cyanide and

       Phosgene (COCl₂). 

1.     Give one example of a compound having a linear molecular structure that has an overall dipole moment (is polar) and another example of a linear molecule that does not have an overall dipole moment (is non-polar). Do the same for molecules that have trigonal planar and tetrahedral molecular structures.

1.     Describe the type of bonding that exists in the F₂(g) molecule. How does this type of bonding differ from that found in the HF(g) molecule? How is it similar?