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A coffee cup calorimeter is calibrated by adding 55.5 grams of H20 to the calorimeter. The initial temp of the calorimeter is 21.5 degrees celcius. the H2o is initially 98.1 degrees celcius and final temp of both the H2o and calorimeter is 39.2. Calculate the heat capacity in units of J/c. Use 4.184 j/g for specific heat of water
Determine the pH of the solution before the addition of any HNO3. The Kb of NH3 is 1.8 × 10-5. a. 4.74 b.9.26 c.11.13 d. 13.00 e.12.55
what do the bond angles of boron trifluoride suggest about the hybridization state of the boron atom of water
draw all three resonance structures for the carbocation intermediate that results from STEP 2 in the electrophilic aromatic substitution reaction when benzoic acid reacts with Br2 in the presence of FeBr3
How many amps are required to produce 28.7 g of lithium metal from a sample of molten lithium chloride
How many Joules are required to heat 2 L of water in a pot from 20 degree C to the boiling point of water? The specific heat of water is 4.18 J/g. Degree C and the density of water is 1 g/mL
Endorphins: What Are They and How Do They Work?, Describe in brief the chemistry and biology of the feel-good chemical, endorphins. Also explain why the name feel good
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill
Calculate the values of E for the cell when the following volumes of the Cu titrant have been added: (Activity coefficients may be ignored as they tend to cancel when calculating concentration ratios.
A piece of metal of mass 22 g at 92C is placed in a calorimeter containing 53.7 g of water at 21C. The final temperature of the mixture is 55.3C. What is the specific heat capacity of the metal?
In many cases, patients require medication to be infused on a continual base. Paramedics will receive orders to administer a certain number of units (usually milligrams or micrograms) of a medication per minute to a patient through an IV. Known as..
When 1.00 g of Boron is burned in O2 (g) to form B2O3 (s), enough heat is generated to raise the temp of 733 g of water from 18.0 deg C to 38.0 deg C. Calculate the hear of formation of B2O3(s) under these condtions.
What is the silver ion concentration in a solution prepared by mixing 339 mL of 0.398 M silver nitrate with 405 mL of 0.591 M sodium chromate? The Ksp of silver chromate is 1.2 × 10-12
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