Find concentration of calcium chloride in mass percent
An aqueous CaCl2 solution has a vapor pressure of 83.0 mmHg at 50 degrees celsius. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent?
Now Priced at $5 (50% Discount)
Recommended (98%)
Rated (4.3/5)
Assume you completely hydrolyze a sample of the peptide Phe-Val-Lys-Ser using the appropriate protease in a phosphate buffer solution at pH=7. What two species would actually constitute the phosphate buffer.
You require a buffer with pH of 4.50. You have 1.00L of a solution of 1.80M acetic acid. How many grams of solid sodium acetate (NaC2H3O2, molar mass 82.0g/mol) must be added to give the pH of 4.50? The pKa of acetic acid is 4.74. Show all your work
When Dr. Farrell was a graduate student, he once made up a pH 8.0 sodium acetate buffer. Why would the casual observer to this buffering faux pas come tot eh conclusion that he had the intellectual agility of a small soap dish?
Bowman Corporation is considering an investment in special-purpose equipment to enable the company to obtain a four-year government contract for the manufacture of a special item.
Original production had been budgeted for 22,000 units with a standard material quantity of 5.7 board feet per unit and a standard price of $12 per board foot. Actual production was 23,500 units.
Question: A bag contains ten counters, of which six are red and four are green. A count is chosen at random; its colour is noted and it is replaced in the bag. A sound counter is then chosen at random. Find the probabilities that:
Locker rental Corp. (LRC) Operates locker rental services at several locations throughout the city including the airport, bus depot, shopping malls and athletic facilities.
A .900g sample of water is injected into a 10.0 liter flask at 55 degrees C. How much H2O (l) remains if any, remains in the flask once equilibrium is reached? The vapor pressure of water at 55 C is 118 mmhg.
1951175
Questions Asked
3,689
Active Tutors
1451009
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
Problem: An infant with known congenital heart disease presents with weight loss, tachypnea, and hepatomegaly.
For a research topic on evaluating the access to health services for commercial sex workers as a mixed method approach provide the methodology
The healthcare provider ordered a urine culture for a client. Which item would a nurse need for a urine specimen collection from an existing indwelling
The nurse practitioner (NP) evaluates a client with complaints of a burning sensation in the chest that often occurs after meals and is exacerbated
I am writing a dissertation topic on the utility of community based interventions in post exposure support to survivors of IPV in uMzingwane district
A 12-month-old child presents with fever of 100.9, lethargy, vomiting and tachypnea. The history is significant for recent hand-foot-mouth disease infection.