General Chemistry 1

C$_2$H$_4$ + 6 F$_2$ $\longrightarrow$ 2 CF$_4$ + 4 HF

Find the $\triangle$H of the above reaction given:

H$_2$ + F$_2$ $\longrightarrow$ 2 HF $\triangle$H = -537 kJ

2 C + 2 H$_2$ $\longrightarrow$ C$_2$H$_4$ $\triangle$H = +52 kJ

CF$_4$ $\longrightarrow$ C + 2 F$_2$ $\triangle$H = +680 kJ

Calculate the energy of a mole of photons of blue light ( 4.00 x 10$^2$ nm )

Rank the following wavelenths in order from lowest energy to highest energy: (Hint: for comparison, units should be the same)

500 nm

190 nm

250 mm

320 $\mu$m

Give the electron configuration, the number of valence electrons, and also state whether the element is diamagnetic or paramagnetic:

Fe

O

Ar

Al

Provide the lewis dot structure, molecular geometry, orbital geometry, polarity, and the hybridization SO$_3$

Calculate the mole fraction (and mole percent) of oxygen in exhaled air if the P$_{O_2}$ = 760 torr and P$_{total}$ is 1116 torr.