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Two different substances at different temperatures are allowed to come in contact and thermally equilibrate. The mass of the first substance, (substance A), is 31.00 grams and its initial temperature is 21.4oC. A is allowed to come in contact with substance B. B has a mass of 46.28 grams and its initial temperature is 86.5oC. These two substances reach thermal equilibrium at a temperature of 64.2oC. If the specific heat capacity of substance B is 1.17 J/g·C, what is the specific heat capacity of substance A? Assume no heat is lost to the surroundings.
dissolved in water to produce a 0.0125 M solution. The pH of the resulting solution is 6.39. Calculate the Ka for the acid.
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
Calculate the Gibbs energy of the reaction (delta G rxn) at 25'C for the above rxn when all three gases are at 0.0010 atm. Kp = 1.8 x 10 ^ - 18
A fish tank holds 30.0 gal of water. Using a density of 1.0 g/mL for water, determine the number of pounds of water in the fish tank.
Compound A is a water-soluble liquid that gives positive 2,4- dinitrophenylhydrazine and iodoform tests and a negative Tollens test. The IR spectrum of A has bands at 2950, 1720 and 1370 cm-1.
Determine the mass of the steel bar If the final temperature of the system reached to 21.0 degree celsius?
If 4.50 g of methane gas (CH4) is in a 2.00-L container at 35°C, what is the pressure in the container?
You mix 55 mL of 1.00M silver nitrate with 25 mL of 0.81 M sodium chloride. What mass of silver chloride should you form?
What type of HPLC column and detector could be used to separate and detect benzaldehyde and 4-hydroxymethylbenzaldehyde?
CHEM 354 Extended Problems, The variation of EMF for the cell below with temperature is shown in the graph below.
Most organic polymers are named based on the monomers used in their production. However, poly(vinyl alcohol) (PVA) is not made from vinyl alcohol,
Compare the experimental mole ratio of NaHCO3 to NaCl with the theoretical mole ratio. Explain the difference. The experimental mole ratio is 1:1.
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