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A pycnometer is a glass flask with a tight fitting glass stopper that is used to obtain the volume of a liquid with high accuracy. A pycnometer has a mass of 25.151 grams when empty, and a mass of 42.481 grams when completely filled with water. The pycnometer has a mass of 47.629 when completely filled with an unknown liquid. What is the density of the unknown liquid? Assume the density of water is 1.000 g/cm³.
When the equation is properly balanced with the lowest whole number coefficients, what is the sum of ALL the coefficients?
A first-order decomposition reaction has a rate constant of .0061 yr-1. Explain how long does it take for reactant to react 12.5% of its original value
a sample of gas with a mass of 1.80 g occupies a volume of 921 ml at a pressure of 733 torr and a temperature of 24 c.
Calculate the change in entropy that occurs when 18.66 g of ice at -14.6°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for H2O(s) and H2O(l)
While you mix iron and HCL why does the chemical reaction begin slowly and then suddenly accelerate
a certain first-order reaction has a rate constant of 7.50times10-3 at 45 . how many minutes does it take for the
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 13.0 oz drink from 74 degree F to 31 degree F
calculate te single ion actvity coefficients for Cs^+, Cd^2+, Al^3+ and dissolved H2CO3 s a function of ionic strength
Tetrahedral complexes of Co2+ are quite common. Use a d-orbital splitting diagram to rationalize the stability of Co2+ tetrahedral complex ions.
Which of the following solutions has the highest osmotic pressure? A. 1.0 M K3PO4 B. 2.0 M LiBr C. 4.0 M C6H12)6 D. all have the same osmotic pressure
Describe chemical and physical characteristics of the waste stream. - Discuss the most significant problems with managing the waste stream.
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
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