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A list of compiled anhydrous masses for Na2CO3, CaSO4, and MgSO4 and I have to find the molar ratio of these anhydrous masses. The compiled list is from every section of chemistry, Different masses
Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concentration of Fe3+. Justify any approximations you make.
In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×
What is the equation and color of product for chemical reaction Cd2+ (aq) + S2-(aq), SnS2(s) + OH-(aq), Cu2=(aq) + NH3(aq)
Find the Net Iconic Equations for these Chemical Reactions- a. Cu+4HNO3(aq)= Cu (NO3)2 (aq)+2NO2(g)+2H2O(l) b. Cu(NO3)2(aq)+2NaOH(aq)=Cu(OH)2(s)+2NaNO3(aq)
Calculate the concentration (in molarity) of a Ba(OH)2 solution if 25.0 mL of the solution are needed to neutralize 20.0 mL of a 0.500 M HCl solution
Calculate the lime dosage required for soften- ing by selective calcium removal for the following water analysis. The dissolved solids in the water are CO2 = 17.6 mg/L, Ca2 + = 63 mg/L, Mg2 + = 15mg
A source water mineral analysis shows the following ion concentrations in the water: Ca2+ = 70 mg/L, Mg2 + = 40 mg/L, and HCO3- = 250 mg/L as CaCO3. Determine the water's carbonate hardness, noncarb
Calculate the fractional compositions 0 (HA) and 1 (A) for HEPES at pH = 7.00, 7.56, and 7.80. Assume the ionic strength is zero.
When an ant bites you, the reason it stings is because of an injection of formic acid. What is the pH when 50.0 mL of 0.1480 M formic acid (HCOOH) is titrated with 40.2 mL of 0.1841 M NaOH? PKa form
What mass of carbon dioxide will be produced when 29.9 g of butane reacts with an excess of oxygen in the following reaction
3Cl2(g) + 6NaOH(aq) ? 5NaCl(aq) + NaClO3(aq) + 3H2O(l). How many grams of sodium chloride can be produced from 37.2 g of NaOH
The Cd2 was displaced from EDTA by the addition of an excess of CN-. Titration of the newly freed EDTA required 23.4 mL of 0.0250 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solu
A buffer solution is made that is .412 M in CH3COOH and .412 M in CH3COOK. Write the net ionic equation for the reaction that occurs when .088 mol HI is added to 1.00L of the buffer solution. What i
An unknown gas Q effuses 1.33 times as fast under the same conditions as Xe gas. What is the molar mass (g/mol) of Q
What observed rotation is expected when a 1.28M solution of (R)-2-butanol is mixed with an equal volume of a .640M solution of racemic 2-butanol, and the resulting solution is analyzed
A solution is 0.10M Pb(NO3)2 and 0.10M AgNO3. If solid NaCl is added to the solution what is [Ag+] when PbCl2 begins to precipitate? (Ksp PbCl2 = 1.7 x 10^-5; AgCl = 1.8 x 10^-10)
A solution of Chloroform (CHCl3) and Acetone ((CH3)2CO) exhibits a negative deviation from Roult's law. The result implies that
What mass of aluminum, in grams, can be heated from 24.5C to 44.0C by a quantity of heat sufficient to raise the temperature of 125 g h2O through this same temperature interval
How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 9.45 to 9.02. Assume a neglible volume change
As the protons are transported into the cell, ATP synthesis can be coupled to this process by the enzyme ATP synthase. At 100% efficiency, under the conditions listed above, how many protons must be
Given two liters of .407 M KCl how many milliliters of this solution you should use to prepare 250.0 ml of .175M KCl
What volume of concentrated nitric acid (16 M NHO3) will be needed to prepare 250 mL of 0.3 M HNO3
How many grams of body mass does the person lose in about 8 h sleep if all the CO2 and H2O exhaled come from the metabolism of glucose
Which of the following reactions best describes the acid-base properties of acetic acid (HC2H3O2) in aqueous solution