An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 5.00g of this compound produced 7.33g of carbon dioxide and 3.00g of water. question: how many moles of carbon, c, were in the original sample? express your answer to three significant figures and include the appropriate units.

When preparing a tlc slide of a reference standard material (rsm), a solvent or mixture of solvents is used to dissolve the rsm and transfer it into the tlc plate. how does its polarity affects the rf of the rsm? the rf will increase depending of it polarity, but never decrease it does not affects it since the solvent evaporates before the insertion of the tlc slide in the jar a polar solvent will definitively reduce the retention factor a polar solvent will increase rf