George was curious about the best way to recycle aluminum. his science teacher told him that there have been numerous studies already done on this topic. what would be george's first step in his investigation of recycling of aluminum? a) research b) experimentation c) classification d) observation

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.

Apush or pull that moves or changes and object when to objects touch

How is the atomic number of a nucleus changed by alpha decay