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Which of the following species will always be a spectator ion in a precipitation reaction. Cl-, NO3-, Br-, NH4+, S2-, SO42-, K+ Is it K+ and NH4+, because they alkali metals and the ammonium ion are
The free radical bromination of ethane includes all of the following in the reaction mechanism EXCEPT
The car has a city mileage of 20 miles per gallon. If the car is replaced with the new car with city mileage off 32 miles per gallon and the average cost of gasoline is $3.62 per gallon, estimate th
Write net Bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when aqueous solutions of the following are mixed.
Perform the various calculations with your collected data as listed in the lab's observations section and compare your results with the literature values by calculating your percent error for each o
The solubility of slaked lime, Ca(OH)2, in water is 0.185g/100mL. What volume of 0.00250 M HCl is needed to neutralize 11.0mL of saturated Ca(OH)2 solution
Dynamic viscosity is the product of kinematic viscosity (m2 /s) and density. What are the fundamental dimensions of dynamic viscosity
In a combustion process in which a specified percentage of excess air is used, and in which CO is one of the products of combustion, will the analysis of the resulting exit gases contain more or les
The excess HCl in the solution required 94.9 mL of 0.128 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
Complete and balance the following molecular equations, being careful to apply the solubility rules to the products.
Why is the pka of formaldehyde less than acetaldehyde, a regular aldehyde or a ketone? Why is it a stronger acid compare to these other structures?
If you weigh .25g of an antacid tablet that weighs 1.42g, what percentage of the tablet have you used? If the tablet contains 250 mg of CaCO3, what mass of CaCO3 do you have in your measured portion
Write the balanced chemical equation for the reaction of aqueous phosphoric acid with aqueous sodium hydroxide (NaOH is being titrated). Then calculate the volume of .200 M H3PO4 could be neutralize
Complete and balance the molecular, ionic, and net ionic equations for the following reactions.
Enter balanced molecular, ionic, and net ionic equations for the following pairs of reactants. If all ions cancel, indicate that no reaction (N.R.) takes place.
Suppose that you wished to prepare copper(II) carbonate by a precipitation reaction involving Cu2+ and CO3^2-. Select all of the pairs of reactants that could be used as solutes
Excess air for combustion is calculated using the assumption of complete reaction whether or not a reaction takes place. For the typical combustion process the products are CO2 gas and H2O vapor. In c
Suppose 8.26 g of solid Mg(OH)2 is added to 36.1 mL of 0.488 M H2SO4 solution. What will the concentration of Mg2+ be when all of the acid has been neutralized. How many grams of Mg(OH)2 will not ha
How many milliliters of ammonium sulfate solution having a concentration of 0.411 M are needed to react completely with 61.4 mL of 1.24 M sodium hydroxide solution. The net ionic equation for the re
A coal containing 81% C, with a calorific value 32,400 kJ/kg is burnt to produce a flue gas of the following composition: CO2=10.4%, CO= 1.4%, O2= 5.5 % and the rest is nitrogen. Determine the carbo
How many milliliters of 0.410 M KOH solution are needed to completely neutralize 48.2 mL of 0.151 M HI solution? The reaction is KOH(aq) + HI(aq) ? KI(aq) + H2O(l)
CaCO 3 ( calcium carbonate ) is insoluble in water. would this ionic compound conduct electricity. why/why not.
How many milliliters of 5.0 M K2Cr2O7 solution must be diluted to prepare 250 mL of 0.10 M solution
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air. (a) If the p
Since the air is going at 25 C and assuming atmospheric pressure, calculate the actual volume of air. Calculate the number of moles of CO2, H2O, O2 and N2 in the flue gas