Q-1: A) 0.50 mL of 96 % H2SO. (98 g/mol, density: 1.84 g/mL) was diluted 750 mL with ultrapure water. Calculate pH of this solution?
B) To prepare pH 2.3 bisulfate/sulfate buffer solutions, how much mL
of 2.52% (w/v) of KOH (56 g/mol) should
be added
to 500 mL of
above H2SO4 solution (a)? (If you cannot find the concentration of the
above diluted H SO,
solution (a), take the concentration of the diluted
H2SO4 solution as 0.015 M. In this case, the score of the question will
be 80% of the actual score) Kaj: .. Kaz:1.2x10-2

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

2. how is heavy water different from normal water

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.