i need help with all the questions please

The osmotic pressure of 1.51102M sotutions of CaCl2 and urea at 25C are 0.911 atm and 0.369 atm, respectively. Calculate the van't Hoff factor ror the CaCl2 solution. Round your answer to 3 significant digits. i= A 266. mL sample of a sugar solution containing 2.01B of the sugar has an osmotic pressure of 29.8mmH8 at 34.0. C. What is the molar mass of the sugar? Round your answer to 3 significant digits. Note: Reference the Conversion factors for non-SI units table for additional information. Note: Reference the Fundamental constants table for additional information. Two liquids A and B have vapor pressures of 71.7 and 121. mmHg, respectively, at 25C. What is the total vapor pressure of the ideal solution made up of when there are 1.00 mole of liquid A and 1.00 mole of liquid B? Round your answer to 3 significant digits. Consider this reaction: A+Bproducts The following data was obtained at a certain temperature. Part 1 of 3 What is the reaction order with respect to A ? What is the reaction order with respect to B? Part 3 of 3 What is the overall reaction order? Chlorine oxide (ClO), which plays an important role in the depletion of ozone, decays rapidly according to the equation 2ClO(g)Cl2(g)+O2(g) Round your answer to 2 significant digits. Rateconstant=M1s1 A chemistry graduate student is studying the rate of this reaction: 2N2O5(g)2N2O4(g)+O2(g) He fills a reaction vessel with N2O5 and measures its concentration as the reaction proceeds: Use this data to answer the following questions