Find the percentage composition of a compound that contains 1.94 g of carbon, 0.48 g of hydrogen, and 2.58 g of sulfur in the 5.00 g sample. *
33.3% C, 33.3% H, 33.3% S
38.8% C, 9.6% H, and 51.6% S
30.1% C, 20.8% H, and 50.1% S
39.0% C, 5.5% H, and 56.5% S

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

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?