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The average length of time between arrivals at a turnpike tollbooth is 23 seconds. Assume that the time between arrivals at the tollbooth is exponentially distributed. If a car has just passed through the tollbooth, what is the probability that no car will show up for at least 3 minutes?
Explain when a solution containing 1.4g of Ba(NO3)2 and 2.4g of NH2SO3H is boiled, a precipitate forms. The precipitate may be Ba(NH2SO3)2, BaSO4, or Ba(NH2)2. a) Compute the number of moles of each reactant. b) Find out the limiting reactant. c) ..
Question- What products are formed when aqueous solutions of calcium bromide and potassium phosphate are mixed
a liquid unknown was found to be inslouble in water & soluble in cyclohexane & alcohol; the unknown was found to have a boiling point of 58 degress celsius at 670mm Hg. What is the substance? What could you do to confirm your answer?
for the reaction 2hig ? h2g i2g keq 0.016 initially a container contains 0.60 m hi 0.038 m h2 and 0.15 m i2 at
a 25.0-ml sample of 1.00 m nh3 is titrated with 0.15 m hcl. what is the ph of the solution after 15.00 ml of acid have
collected over water at 22 degrees C and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen?
Calculate the mass of each product formed when 175 g of silver sulfide reacts with excess hydrochloric acid.4 significant figures. Ag2S(s) + HCl(aq) AgCl(s) + H2S(g) [unbalanced]
what is the concentration in the solution of the first ion when the second one starts to precipitate at 25 C?
Calculate the change in the standard molar entopy for the formation of gaseous nitrogen dioxide from gaseous nitrogen and gaseous oxygen.
What is the binding energy for a beryllium-9 nucleus? What is the binding energy, , for a beryllium-9 nucleus in ? Recall that . 1mev=1.60 x 10^-14
Propose stepwise sythesis of 2-cholor-4-nitrobenzoic acid starting from benzene
The current dietary recommendation is to consume less than 0.1 mol of sodium per day. This is about one teaspoon of table salt. It includes all salt and sodium consumed, including sodium used in cooking and at the table. The sodium content of a po..
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