Calculate the molar concentration of ethanol
(a) Calculate the molar concentration of ethanol in an aqueous solution that contains 2.30g of C2H5OH in 3.50L solution.
(b) Describe the preparation of 2.00L of 0.108M BaCl2 2H2O.
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A lead ball is dropped into a lake from a diving board 18 ft. above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. If it reaches the bottom 5.60 s after it is dropped how deep is
To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions and the reaction chamber was found to expand to 310 cm3.
A proton is initially at rest at a point where the potential is 471 V. Some time later the proton is at a point where the potential is 185 V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy?
(a) What potential difference is required to bring the proton to rest? (b) What potential difference is required to reduce the initial speed of the proton by a factor of 2? (c) What potential difference is required to reduce the initial kinetic en
Calculate the molar concentration of ethanol in an aqueous solution that contains 2.30g of C2H5OH in 3.50L solution.
About 30% of adults say that reading is a favorite leisure activity. Let success be the outcome that reading is a favorite leisure. Find the probabilty that:
Enough cadmium(II) chloride is added to make Cd2+ 0.0013 M. What is the pH of the resulting solution? What percentage of the original hydroxide ion is left in solution?
Estimations is what we are looking. Estimating means and proportion; determining the necessary sample size to obtain confidence intervals with a given confidence level and margin of error.
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