- During an acid-base titration reaction, a 2.0M solution was titrated into 10.0ml of a strong base of unknown concentration. The equivalence point is reached when: A. 5.0ml of have been added B. The moles of added equals the number of moles of ions in the 10.0ml of base. C. The solution changes color D. The number of protons added equals the number of hydroxide ions in the solution of unknown base E. There is not enough information to make a determination. Write down the balanced reaction if the base is NaOH. - A weather balloon has a volume of 25.0L at 1.00atm& 27C. The balloon rises until the pressure is 0.60atm and the temperature is 32C. What is the new volume of the balloon? - A 32.5-g cube of aluminum initially at 45.8C is submerged into 105.3g of water at 15.4C. What is the final temperature of both substances at thermal equilibrium? (Cs of Al=0.903J/gCCs of liquid water =4.18J/gC ) - A battery typically containing 0.200g of zinc (Zn) and 2.000g of iodine (I2) undergoes a process. In trial 05 of the experiment, 0.290g of ZnI was generated. The main reaction for this process is: 2Zn(5)+1,(g) 2ZnI (5). Which compound will be the limiting reagent if the reaction is finished completely? - Why do we need to use the Kelvin Temperature Scale when we do thermodynamie calculations of gases? A. The Kelvin Scale avoids the problem of having 0 as a T value in the equations (particularly in the denominator). B. The Kelvin Scale defines an absolute lowest temperature which ean never be reached and thus sets a base level for the energy of all gases. o C. One can depend on the equations working reliably all the time when Kelvin is used for temperature. Other temperature scales may or may not work. reliably. D. None of the statements A,B,or C are true. E. All the statements A,B and C are true. - Which of the following solutions will have the greatest concentrition of Cl ions? A. 100.0mL of 0.10MHCl B. 100.0mL of 0.10MFeCl C. 100.0mL of 0.10MZnCl D. 100.0mL of 0.10MNaCl E. 100.0mL of 0.10MBaCl