Recent content by SCGirl

A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 --> 2LiF. After the reaction is complete, what will be present? I think I start by dividing 15 g by the molar masses, but is the molar mass 2 x amu of Li and 2 x amu of F? Thanks

A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O. What is the empirical formula of the compound? I don't know how to figure this out without percentages of each element.

Hi, I am having trouble answering these 2 questions. I have already searched my book. First, which of the following cell components is not directly involved in synthesis or secretion? Smooth ER, Golgi Apparatus, Rough ER, or lysosome. According to my book (Campbell and Reece) they all...