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In the procedure for bromination of (E)-stilbene which involves in situ generation of bromine, what is the solid that appears when the concentrated hydrogen bromide is added?
Calculate the pH of a buffer formed by mixing 85 ml of 0.12 M lactic acid with 95 ml of 0.15 M sodium lactate.
A sample of carbon monoxide gas whose mass is 7.75 g is heated from 25 oC to 166 oC at a constant pressure of 5.52 bar.
Which of the following salts will make an ACIDIC solution when dissolved in water. a. NH4Cl b. Al(NO3)3 c. K2CO3 d. NaF Which of the following salts will make a BASIC solution when dissolved in water. a. NaHS b. Cu(NO3)2 c. KHCO3 d. NaF
Ethane enters furnace at 0.9 kg/min and burns with 200% excess air. 50% of fuel is consumed and combustion is assumed complete (meaning no CO is produced). Find the flow rate of Oxygen, Nitrogen,
Copper has two isotopes: Cu-63 (abundance = 69.2%, mass = 62.930 amu) and Cu-65 (abundance = 30.8%, mass = 64.928 amu). Calculate the (average) atomic mass of copper.
volume of 2.24 L at 288 K and 1.05 atm. Calculate the pressure when the volume is 1.19 L and the temperature is 303 K.
Arrhenius acids are compounds that produce one or more hydrogen ions(H^+) plus an anion when dissolved in water. Anions can be manotamic or polyatomic
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
At 25 C the reaction from Part A has a composition as shown in the table below. What is the free energy change,delta G , in kilojoules for the reaction under these conditions. C2H2(g) 4.15 H2(g) 4.45 C2H6(g) 2.25×10-2 ?G = ??? kj
Describe a way to differentiate between the two using a solution of Na2CO3 and write the correct balanced equation
What is the most important attractive forces (London dispersion, dipole dipole, hydrogen bonding) and the number of bonding domains
if the initial concentration of ab is 0.230 m and the reaction mixture initially contains no products what are the
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