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The ionization constant or dissolution constant (KA) for acetic acid (HAc) is 1.8×10-5. (1) Write down the dissociation reaction. (2) Estimate pH of a solution containing 0.6 g of acetic acid in 1 L of water. Molecular weight of acetic acid is 60 g/mol.
Calculate the energy and the wavelength, in nanometers, of light emitted when an electron in an excited hydrogen atom falls from the n=3 level to the n = 1 level.
121 cal of heat are added to 50.0 g of water initially at 15.0 (degrees celsius). What is the final temperature of the water.
A furniture factory needs 36.5 ft2 of fabric to upholster on a chair. Its Dutch supplier sends the fabric in bolts of exactly 200 m2. What is the maximum number of chairs that can be upholstered by 3 bolts of fabric (1 m = 3.281 ft)?
Isopropyl alcohol is mixed with water to produce a 31.0% (v/v) alcohol solution. How many milliliters of each component are present
Calculate the volumetric size of a water molecule in vapor, assuming 1 mole of the vapor occupies 22.4 L, as if the vapor were an ideal gas
Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.) tf and tb?
Molecular orbital templates for diatomic molecules from the 2nd period elements are attached to the back of the exam. Use the appropriate diagram to determine the bond order in the O2+ ion.
Draw the structure of the product that is formed when diphenylmethanone undergoes a reaction with PhMgBr
What's the volume of pure hydrogen present in a sample of 55.0 mL of gas saturated with water vapour at 27 °C, if the total pressure is 104.8 kPa?
When 36.6 L ammonia and 39.5 L oxygen gas at STP burn, nitrogen monoxide and water are produced. After the products return to STP, how many grams of nitrogen monoxide are present ............... g NH3(g) + O2(g) NO(g) + H2O(l)
If the actual yield is 220.0 g and the theoretical yield is 275.6 g then what will be the percent yield of ferrous sulfide.
If 40.0 g acetylene is allowed to react with 40.0 g oxygen, how many grams CO2 are formed.
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