03/23/24

What is the pH of a 0.300 M solution of sodium acetate?

The acetate ion is the conjugate base of acetic acid. The Ka of acetic acid is 1.76×10–5.What is the pH of a 0.300 M solution of sodium acetate?
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03/22/24

Osmotic Pressure
What is the molarity of an aqueous solution of C6H12O6 that has an osmotic pressure of 115 mmHg at 19oC? Answer with 3 decimal places.
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03/22/24

Determine the pH of a solution.
Determine the pH of the solution after the addition of 549 mL of 0.158 M strontium hydroxide (Sr(OH)2) to 786 mL of 0.919 M benzoic acid (C6H5COOH).Assume that the volumes are additive and that the... more
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03/21/24

Calculate the pH of a 3.40×10-4 M solution of codeine if the pKa of the conjugate acid is 8.21.
Codeine is a popular prescription pain killer because it is much less addictive than morphine. Codeine contains a basic nitrogen atom that can be protonated to give the conjugate acid of codeine.... more
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03/21/24

At equilibrium, the value of [H+] in a 0.260M solution of an unknown acid is 0.00404M . Determine the degree of ionization and the Ka of this acid.
At equilibrium, the value of [H+] in a 0.260M solution of an unknown acid is 0.00404M . Determine the degree of ionization and the Ka of this acid.
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03/21/24

What is the total pressure in the container after equilibrium has been established?
A large amount of solid ammonium carbamate is placed in a rigid container at 25.05 °C and allowed to come to equilibrium. What is the total pressure in the container after equilibrium has been... more
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03/21/24

Determine the equilibrium partial pressure of NH3 in a reaction vessel that initially contained 0.900 atm N2 and 0.500 atm H2 at 648 K.
Determine the equilibrium partial pressure of NH3 in a reaction vessel that initially contained 0.900 atm N2 and 0.500 atm H2 at 648 K.The value of Kp for the reaction below is 4.30 × 10–4 at 648... more
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03/21/24

Calculate the pH of a 0.200 M HCN solution.
Calculate the pH of a  0.200 M HCN solution. The Ka value of HCN is Ka= 6.20 ×10–10
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03/20/24

what volume in liters of CH3OH gas forms when 3.20 L of H2 gas are completely reacted at STP according to the following chemical reaction?
Remember 1 mol of an ideal gas has a volume of 22.4 L at STP. CO(g)+2H2(g)->CH3OH(g)please show equation not just the answer!
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03/19/24

I NEED HELP PLEASE
Liquid octane CH3CH26CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 27. g of octane is mixed with 46.1 g of oxygen. Calculate the minimum... more
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03/19/24

Chemistry enthalpy
How many moles of isooctane must be burned to produce 100 kJ of heat under standard state conditions?
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03/19/24

The Ksp of PbBr2 is 6.60 x 10^-6. What is the molar solubility of PbBr2 in a 0.500 M Pb(NO3)2 solution?
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03/17/24

acid-base titration
Determine the number of moles of the listed first substance that would be the chemically equivalent amount of the second substance for each of these acid-base titration combinations:Carbonous acid... more
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03/17/24

For the reaction below, Kc = 4.60 × 10⁻⁶. Note Kc is sometimes called K. What is the equilibrium concentration of B if the reaction begins with 0.550 M A? A (g) ⇌ 3 B (g)
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03/17/24

bronsted-lowry model
Reaction: HO2C2O2H + H2O —> _________ + _____________Label the proton donor and the proton acceptor as acid or base. Predict the products and identify and label each conjugate acid-base pair.... more
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03/16/24

exothermic or endothermic chemical reactions

A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant... more
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03/16/24

Explain the equivalent bond lengths of the nitrite ion.
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03/15/24

Determine the pH for sodium hydrogen phosphate.
pKa = 12.38pKb = 6.80Concentration = 9.44×10-3 MIf the 5% approximation is valid, use the assumption to find the pH.
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03/14/24

finding the pH of a acid
0.0064 g of hydronitric acid is dissolved in 50 mL of water. What is the pH?
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03/14/24

volume required to bring solution to equivalence
What volume of 8.3 x 10-5 M yttrium (VI) hydroxide would be required to bring 55 mL of a 5.9 x 10-3 M sulfurous acid solution to equivalence?
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03/14/24

Determine the pH of the solution.
Determine the pH (to two decimal places) of the solution that is produced by mixing 1.21 mL of 3.65×10-3 M HCl with 69.3 mL of 9.43×10-3 M KH.
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03/14/24

Determine the pOH of the solution.
Determine the pOH (to two decimal places) of the solution that is produced by mixing 54.3 mL of 2.54×10-3 M Na2O with 923 mL of 7.45×10-1 M MgO.
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03/14/24

How to solve this?
Consider a gas cylinder containing 0.100 moles of an ideal gas in a volume of 3.300 L with a pressure of 1.00 atm. The cylinder is surrounded by a constant temperature bath at 400.0 K. With a... more
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03/14/24

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction
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03/14/24

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction
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