Which of the following internal control procedures most likely would deter lapping of collections from customers?

a. independent internal verifications of dates of entry in the cash receipts journal with dates of daily cash summaries
b. authorization of write-offs of uncollectible accounts by a supervisor independent of credit approval
c. segregation of duties between receiving cash and posting the accounts receivable ledger
d. supervisory comparison of the daily cash summary with the sum of the cash receipts journal entries

Steam at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m^3. the steam is then heated, causing the pressure in the vessel to rise to 150 kpa. determine: i. the mass of the steam in the vessel. ii. the temperature and quality of the steam after the heating process. ii the mass of the vapour, mg and liquid, m in the vessel after the heating process. if the steam in the vessel is now further heated, what would the pressure and temperature in the vessel be when all steam has turned into saturated vapour? b. sketch the processes in part (a) and part (b) on p-v and t-v diagrams, indicating clearly the temperatures, pressures and the paths. c. (0.59kg, 111.4°c, 73%, 0.4307kg, 0.1 593kg, 2.11 bar, 121.84°c)