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To obtain the rate of reaction 3I- (aq) +H3AsO4(aq) +2H+(aq)->I3-(aq)+H2AsO3(aq)+H20(l) you might follow the I- concentration or the I30 concentration.
2 NO(g) +Cl2->2NOCL(g) the observed rate law is Rate= K(NO)^2(Cl2). What is the reaction order with respect to nitrohen monoxide with respect to Cl2? Wht id the overall order?
Find the concentration of calcium ions in a solution made by adding 3.50 g of calcium fluoride to 750. mL of 0.125 M NaF. [For CaF2, Ksp = 3.95 ? 10-11.]
What is the net ionic equation for the reaction that occurs when small amounts of hydrochloric acid are added to a HOCl/NaOCl buffer solution?
Calculate the number of moles of sodium carbonate present in a mixture of sodium bicarbonate, sodium carbonate and a neutral component if 6.0 ml of 0.100 M HCl were used to titrate 0.200 g of this m
The hydrogen oxalate ion (HC2O4-) is amphiprotic. Write a balanced chemical equation showing how it acts as an acid toward water. Express your answer as a chemical equation.
Write a balanced half-reaction for the reduction of sulfate ion, SO4^2-, to the sulfite ion, SO3^2- in acidic solution. How many elections appear in the balanced half reaction?
Consider melting 3.00 moles of material X at 1.00 atm. Assuming that the melting co-existence curve is a straight line, what is X's normal melting temperature?
Calculate the fraction of adipic acid that can be extracted from a 50 mL solution of adipic acid in water into three 30-mL portions of ether.
Suppose in the procedure to extract tert-butylphenol from the ether layer you accidentally added the second 10 mL of NaOH to the first 10 mL of NaOH instead of to the ether layer as specified in the
Methane enters a heat exchanger at a volumetric flow rate of 120.0 m3/min, at a pressure of 1.013 bar and temperature of 5.0°C. At these conditions, the specific enthalpy of methane is -45.181 k
A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr2O7 dissolved in 3 mL of 9 mol L 1 H2SO4(aq). One of the ampules is used as reference.
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
If 15.0 m3/min of steam at 450.0°C and 10.0 bar enters a turbine and leaves as saturated steam at 9.25 bar, what is the volumetric flow rate of steam leaving the turbine? If the turbine operate
Suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin C. Further, it took 32.45mL of DCP solution to reach the end point of the titration.
A boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer and sanitizing the brewing tanks.
A student used a DCP solution (standardized to 9.94x10-4M) to analyze a sample of extract from 3.50g of solid food. The titration required 22.49mL of DCP.
You take 3.1789 g of a substance and place it into 100.0 g of benzene. The boiling point of this solution is found to be 80.5464 C. What is the approximate molar mass of the substance? Bp of CCl4 i
A flammable gas made up only of carbon and hydrogen is found to effuse through a small hole in 1.50 min. Under the same conditions of temperature and pressure it takes an equal volume of bromine vap
During a work-up, we are asked to interrupt vacuum, "drizzle" cold methanol over the crude product, then reestablish vacuum. What is the purpose of this step and why does the methanol need to be col
Saturated steam at 300°C is used to heat a counter-currently flowing stream of methanol vapor from 65° C to 260°C in an adiabatic heat exchanger.
In the news, we often hear examples of how DNA or the transfer of genetic information impacted someone's life. Examples range from DNA fingerprinting to genetically engineered organisms to an indivi
Consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 83% efficient and the ferric oxide is only 87.5% pure, what mass of ferric oxide is requir