A student dissolved 10.5 g of NH4Cl in 40 mL ofwater.  The temperature of the water changed from22.5oC to 5.1oC.  Calculate theenthalpy of hydration of ammonium chloride in J/mol.
1.  A student collected the data below whileperforming a kinetics experiment.
Trial | Volume of 2.0 M Reactant A | Volume of 0.5 M Reactant B | Volume of H2O | Time for B to react |
1 | 10 mL | 10 mL | 30 mL | 135 sec |
2 | 20 mL | 10 mL | 20 mL | 69 sec |
3 | 10 mL | 20 mL | 20 mL | 34 sec |
          Â
Use the above information to complete the following table (enterall answers with 3 significant figures)
Trial | concentration of A | concentration of B | Rate for B |
1 | | | |
2 | | | |
3 | | | |
Using the data from the previous problem, determine the orderwith respect to Substance A. Using the data from Problem 1,determine the order with respect to Substance B. Using theinformation from Trial 1 and the experimentally determined ratelaw, determine the value of the rate constant, k for thisexperiment. Report your answer with 3 significant figures.
Please answer all the questions and with the three significantdigits after decimals. Please.
