The reaction of benzene, C6H6, with excess HNO3 resulted in 1.3 g
of H20. If the percentage yield was 15% what was the theoretical
yield?
C6H6 + HNO3 - C6H5NO2 + H20
Molar Mass: C6H6 = 78 g/mol; HNO3 = 63 g/mol; C6H5NO2 =123
g/
mol; H20 =18 g/mol

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?

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .