Multiple choice 20 pts! sulfur hexafluoride is an example of a a) monatomic ion b) polyatomic ion c) binary compound d) polyatomic compound

Draw the lewis dot structure for each of the following polyatomic ions

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?