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A certain reaction has an activation energy of 27.03 kJ/mol. At what Kelvin temperature will the reaction proceed 3.00 times faster than it did at 327 K?
A sample of neon has a volume of 270 mL when it is at a pressure of 831 mmHg. What will be the volume when the pressure is increased to 1238 mmHg?
What mass would carbon disulfide gas (CS2) have if 125 cm3 of the gas at 400°C exerts a pressure of 736 torr?
Predict the mass of the most abundant fragment signal in the mass spectrum of 2,2-dimethylpentane. 85 amu 29
Once the system has reached equilibrium, 5.00g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. Calculate the mass of N2O4 in the final equilibrium mixture.
When a sample of 5.00-g rams of Potassium thiocyanate is dissolved in H2O in a calorimeter that has a total heat capacity =6.225 kJ•K-1, the temperature decreases by 0.200 Kelvin. compute the molar heat of solution of Potassium thiocyanate.
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution.
If 4 g of CuSO4 is dissolved in 9.0x10^2 mL of 0.40 M aqueous NH3, what are the concentrations of Cu2+, Cu(NH34 2+, and NH3 at equilibrium? (Kf = 5x10^13)
Silver chloride often used in silver plating contains 75.27% Ag. Calculate the mass of silver chloride in grams required to make 4.0 g of silver plating.
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
How much water must be added to 488 mL of 0.223 M HCl to produce a 0.134 M solution?
What will be the equilibrium concentration of [H2O] ? What will be the equilibrium concentration of [CO2]? What will be the equilibrium concentration of [H2]?
Bonding in some solids does not fit neatly into one of the four categories. Explain why the bonding in Na2CO3 is not purely ionic.
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