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. In the tin oxide laboratory activity, what was the color of the vapor emitted when the nitric acid was added to the tin?
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa.
The activation energy for the denaturation of a protein is 391.0 kJ/mole. At what temperature will the rate of denaturation be 19 percent greater than its rate at 25.00 degrees Celsius?
How much heat (in kJ) is evolved in converting 1.00 mol of steam at 130.0 degrees C to ice at -55.0 degrees C? The heat capacity of steam is 2.01J/g and of ice is 2.09j/g.
To determine the concentration of a solution of lactic acid a chemist titrates a 20.50 mL sample of it with 0.1010 M NaOH and finds that 10.76 mL of titrant are required to reach the equivalence point. What is the concentration of the lactic acid ..
A solution is made with 100mL of DI water and 8mL of .10 HCL (hydrochloric acid). then 2.50mL of NaOH is added. What is the new pH?
At 25 degrees Celsius, .87 atm of No2(g) was allowed to decompose. At equilibrium it was found that the partial pressure of no2(g) was .81 atm. Calculate the value of kc at the temperature
explain why pure water does not conduct electricity and what happens when a strong electrolyte is dissolved in it
then we cooled in an ice bath. then we washed it with water. and then added bicarbonate to netralize any acetic acid or sulfuric acid present. then we did an an extraction.
The temperature of a 2.25 L sample of gas decreases from 35C to 20C. What is the new volume?
Assuming the solution has a heat capacity of 4.18 J/°C · g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Why would a mixture of salts be more difficult to identify than a single salt? For example, copper sulfate, barium nitrate and nickel bromide versus only nickel bromide.
If one reacts a double bond with bromine in chloroform a dibromide is obtained. However, if one reacts bromine in water with a double bond, a vicinal halohydrin is formed. Provide an explanation for this result and show a mechanism for the reactio..
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