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In the reaction of cyclopenta-1,3-diene, ether and Br2: Why is ether used as a solvent? a. it stabilized the carbonium ion b. it enhances the regioselectivity of the reaction c. it is the universal solvent d. it does not participate in the reaction e. it is necessary for the formation of the bromonium ion
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .)
Write the balanced net ionic equation for the reaction that occur in the following case. Ba(NO3)2 (aq) + K2SO4(q) Express your answer as a balanced net ionic equation.
A 1.0 L sample of a gaseous compound of hydrogen, carbon, and nitrogen gave upon combustion 2.0 L of CO2, 3.5 L of H2O vapor, and 0.50 L of N2 (with all gas volumes measured at the same T and P). What is the empirical formula of the compound?
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
A basketball with a volume of 3.50 Liters is left in a car when the temperature is 298 K. What will the volume of the ball be as the car heats up to 305 K during the day?
What is the molarity of a solution that contains 41.0 g of vitamin B1 hydrochloride (molar mass = 337 g/mol}) in 280 mL of solution?
We have a refrigeration unit that works at a pressure of 0.1MPain the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90%
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 1982.
Acetone (CH3)2CO, has a larger dipole moment than water, but NaCl will not dissolve in it.
water boils at 63.7 Celsius. What weight of ehtyl iodide would be carried over by 1g of steam during steam distillation?
Determine how long will it take for the concentration to decrease to 0.13 mol/L express your answer in seconds.
Nitrosyl chloride (NOCl) decomposes at elevated temperatures according to the equation 2NOCl(g) ->2NO(g) + Cl2(g). Calculate Kp for this reaction at 680°C. (For this reaction ΔH° = 81.2 kJ/mol, ΔS° = 128 J/K·mol)
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