Question 25

Carbon tetrachloride, CCl4, has a vapor pressure of 213 torr at 40 C and 836 torr at 80 C.   What is the normal boiling point of CCl4?

Question 24

In Breckenridge Colorado, the typical atmospheric pressure is 520. torr.   What is the boiling point of water (delta H vap = 40.7 kJ / mole) in Breckenridge?

Question 23

Calcium has a cubic closest packed structure as a solid.   Assuming that calcium has an atomic radius of 197 pm, calculate the denisty of solid calcium.

Question 22

Out of H2, B2, C2^-2, , OF, which would the bond strength be expected to weaken as an electron is removed to form to remove the positive charged ion?

Question 21

Which charges for the N2 molecule would give a bond order of 2.5?

Question 20

Does SeO3 or SeO2 have dipole moment?

Question 19

Which of elements 1 – 36 have 2 unpaired electrons in the ground?

Question 18

How many orbitals in an atom can have the designation 5p, 4d, n=5, n=4?

Question 17

Photosynthesis uses 660 nm light to convert Co2 and H2O into glucose and O2.   Calculate the frequency of this light.

Question 16

A 30.0 g sample of water at 280K is mixed with 50.0 g of water at 330K.   Calculate the final temperature of the mixture assuming no heat loss to the surroundings.