How can estimate the empirical formula
How can estimate the empirical formula when 0.192 g of phosphorus is burned in oxygen, 0.440 g of phosphorus oxide resulted. Write down a balanced equation for the reaction of phosphorus with oxygen.
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Calculate the density of solution and the molality of methanol. In an aquatic solution of methanol (293K and 1bar) with fraction of mass 0,30 the molarity is equal with 8,911 mol/L.
Determine the order of the reaction? How do you know? Determine the rate constant for the reaction? Explain.
If innermost part of cutting edge is 6in, from center of blade, how many radians per second should blade turn? How many revolutions per minute in this?
If a phone call just occurred, determine the probability that there won't be another phone call for at least the next 30 seconds? Determine the probability that there will be at least 2 phone calls in the next minute?
Determine the partial pressure of NO equilibrium with O2and N2 that were placed in a flask at initial pressures of 0.2 atm and 0.8, respectively?
Identify the temperature at which the reaction changes from spontaneous to non spontaneous or vice versa. And give the theoretical range of all temperatures that are spontaneous in Kelvin.
Once the chromatographic column has been prepared, discuss why is it important to allow the level of the liquid in the column to drop to the level of the alumina before applying the solution of the compound to be separated?
Explain what would have been the result if a large quantity of petroleum ether alone were used as the fluent in either of the experiments described?
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