What is the total number of electrons in p orbitals in a ground-state iron atom?
a. 6
b. 18
c. 12
d. 24
e. 30

Who is better, messi or cristiano, i need this for a chemistry class. asap

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.