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Iron and oxygen react to form iron(III) oxide; 4Fe(s)+3O2(g)-->2Fe2O3(s). Determine the limiting reactant in each of the following mxtures of reactants
If the equilibrium concentration of Cd2+ ion is 1.5 X 10-6 M, calculate the equilibrium concentration of OH- in an aqueous equilibrium between solid Cd(OH)2 and its ions. (Ksp for Cd(OH)2 is 2.5 X 1
Calculate [H+], pH, [OH-] and pOH in a solution in which lactic acid, HC3H5O3, concentration is 0.250 M and the lactate ion concentration is 0.125 M.
When the gases dihydrogen sulfide and oxygen react, they form the gase sulfur dioxide and water vapor
what is the reduced mass of benzene. THe atomic masses of C and H are 12.00 and 1, respectively.
Calcium cyanamide, CaCN2, reacts with water to form calcium carbonate and ammonia; CaCN2(s)+3H2O(l)-->CaCO3(s)+2NH3(g). a) How many grams of water are needed to react with 75.0 g of CaCN2
Iron(III) oxide reacts with carbon to give iron and carbon monoxide; Fe2O3(s)+3C(s)-->2Fe(s)+3CO(g). a) How many grams of C are required to react with 2.50 mol of Fe2O3
Nitrogen gas reacts with hydrogen gas to produce ammonia by the following equation, N2(g)+3H2(g)-->2NH3(g). a) If you have 1.80 mol of H2, how many grams of NH3 can be produced
A 2.00 g sample of ammonia is mixed with 4.00 g of oxygen. Which is the limiting reactant and how much excess reactant remains after the reaction has stopped
The solution was then titrated to a blue-black endpoint with 26.0mL of a 0.0163 M KIO3 solution. How many mg of Vitamin C were in the tablet ?? and what % of the powder was Vitamin C?? Please solve
Consider the standard cell at 25C based on the following half-reactions. Pb^2+ + 2e^- --> Pb E=-0.13V Zn^2+ + 2e^- --> Zn E=-0.76V To the standard cell, OH-, is added to the zinc compartment c
For each of the half cells compare electrode potentials calculated from (1) concentration and (2) activity data. a) HCl (0.0200 M), Nacl (0.0300 M)|H2 (i.00 atm), Pt b) Fe(Clo4)2 (0.0111M), Fe(ClO4)
The following reaction is for solvolysis of t-butyl chloride. Show mechanism for the formation of the major and minor products. (CH3)3CCl + H2O--------(CH3)3COH+(CH3)2=CH2
Calculate the pH of a solution containing 25.00 mL of 0.12 M formic acid (Ka = 1.7 x 10^-4) to which the following amounts of 0.10 M NaOH have been added
Is 373 K a high temperature? Some thermodynamic principles only hold at "high temperature". How is "high temperature" defined
A sample of an unknown compound was analyzed and found to contain 19.97% phosphorus and oxygen - what is the empirical formula of the compound
Water autoionizes to produce hydronium ion and hydroxide ion. The product of the concentrations of these ions equals the water autoionization constant, Kw. This ionization constant depends on tempe
A 12.00 g sample of manganese is heated and allowed to react completely with the oxygen in the air to form an oxide having a mass of 18.99 g. What are the moles for each component? Also, what is the
Will changing the temperature of the surroundings favor spontaneity, nonspontaneity, or have little effect? deltaH = -30.4 kJ/mol
Give two reasons why cyclohexane adopts the chair conformation rather than a planar structure
explain why cis-1-chloro-4-t-butylcyclohexane reacts rapidly with sodium ethoxide while the trans-isomer react slowly
If 0.334 g of water was obtained from the equation N*M H2O ?N + M H2O, how many grams of the hydrate were heated
The concentration of acetic acid (pKa = 4.75) in vinegar is about 1.0 M. With this information, what do you predict the pH of vinegar to be
indicate the compartment (A or B) that will increase in volume for each of the following pairs of solutions separated by a semipermiable membranes
will strontium sulfate form a precipitate at 25 degrees celcius when 345mL of a solution that is .0100M in Sr+2(aq) is added to 75mL of a .175M SrSO4