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Briefly describe the hazards associated with even small amounts of each of the following: concentrated HCI, NaOH solution, AgNO3 solution, and solid NaHSO4
How long (in hours) would this current have to be applied to plate out 8.90 g of nickel?
Draw the organic product(s) of the reaction of p-methylbenzoic acid with aqueous sodium hydroxide
Consider the reaction of phosphorus and nitric acid. Determine how the oxidation number of phosphorus changes during this reaction. The phosphorus compound formed is phosphoric acid.
Calculate the molar concentration of uncomplexed Zn2+ in a solution that contains 0.20 mole of Zn(NH3)42+ per liter and 0.0116 M NH3 at equilibrium.
What mass of rm KCl is needed to precipitate the silver ions from 15.0 mL of 0.190 M rm AgNO_3 solution?
A beta -emitting radiation source gives 250 units of radiation at a distance of 5.0m.At what distance does the radiation drop to one-tenth its original value
Methane is completely burned with 20.0% excess air, with 25.0% of the carbon going to CO. What is the partial pressure of CO in the stack (exit) gas if the gas exits at a pressure of 740 mm Hg and a temperature of 300°F
A 25ml sample of 0.200 M HCO2H(aq) is titrated with 0.100 M KOH (aq). What is the pH at the equivalence point. (Ka of HCO2H = 1.8 x 10^-4)
For some iron-carbon alloy, the mass fractions of total ferrite and total cementite are 0.55 and 0.46 respectively. (a) On the base of carbon content would this alloy be classified as a steel or a cast iron? Why? (b) If the alloy is a steel, is it..
Important information about Chem problem, A 25 mL sample of .13M HCl is mixed with 15mL of .24M NaOH. The pH of the resulting solution will be nearest. The answer is 11.9
an equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. inside the
If the weight of the gas in the bulb is 0.3554 g, what is the mole percent of butane in the mixture. Set up two equations to solve simultaneously for the two unknowns, the moles of ethane and butane.
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