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Problem- A 0.130-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution.
1) What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)6^2+ is 5.5 × 10^8.
Describe the answer
How long will it take for all of the strontium 90 presently on the earth to be reduced to 1/32nd of its present amount?
The directions state 'weigh about 5 grams of sodium chloride'. Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
Bleach is a dilute solution of NaOCl in water. The density of bleach is 1.05g/ml. If the percent by mass of NaOCl is 6% what is the [NaOCl]
Complete the equations that illustrate bicarbonate ion's capability to function as a buffer. a) HCO3^-1 + H+ --> ? b) HCO3^-1 + OH- -->
If molar heat of a given salt = 50.9 kJ/mol and the volume of water in which the given salt is to be dissolved in 300. mL. How many grams of salt must be dissolved for a temperature drop of 3 degrees celsius
A 20.00-mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volume of base has been added: 20.1 mL.
Design a circuit for calculating the average value of three input voltages multiplied by 1000?
Calculate the number of molecules inside the cell, which is 3.6um long and 1.2 um in diameter.
Calculate the wavelength of the light emitted when the electron in a hydrogen atom falls from the n=4 shell to the n=3 shell. [1eV=1.6023*10^-19 J] report answer in meter and in nanometers
What mass of Ar gas (in g) is contained in a 6.40 L tank in which its pressure is 0.703 atm and the temperature is 64.0°C? Do not enter units.
What is the theoretical yield of acetic acid when 22.5 g of methanol reacts with 32.0 g of carbon monoxide in the following equation: CH3OH + CO --> HC2H3O2
she measures the freezing point of the solution to be 2.7 oC; that of pure cyclohexane is 6.5 oC. cyclohexane has a Kf of 20.2 oC/m. caclculate the molar mass of the compound
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