will give branliest!
10 points!
- a student has 872g if Pb. how many moles of Pb is this?

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.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes or no?