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Problem- Which of the following gives a buffer solution when equal volumes of the two solutions are mixed? Check all that apply. Check all that apply. 0.10 MNH4Cl and 0.10 MNH3 0.20 MNH4Cl and 0.10 MNaOH 0.20 MNH3 and 0.10 MHCl 0.10 MNH3 and 0.10 MHCl
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the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 61.16°C. If the specific heat of the solution is 4.18 J/(g ? °C), calculate delta H for the reaction, as written. Ba+2H2O--->Ba(OH)2+H2 Delta H?
If the volume of the cylinder is 4500 ml and the pressure of the N2 in it is 3.3 atm. (temperature is 25ºC). How many moles of nitrogen molecules are in the cylinder
The enthalpy of the reaction DH = -484 kJ. What is the enthalpy change (in kJ) when 1 grams of hydrogen are burned
A hot-air balloon has a volume of 875L . What is the original temperature of the balloon if its volume changes to 955L when heated to 56 degrees celsius
A buffer that contains 0.347 M of a base, B and 0.483 M of its conjugate acid BH+, has a pH of 8.08. What is the pH after 0.00713 mol of HCl are added to 0.442 L of the solution
a buffer ph 3.70 was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous
how many grams of water can be heated from 25 degrees c to 100degrees c by the heat released from converting 49.7 g of
Calculate the potential of a hydrogen ( p= 1.02 atm) electrode in an aqueous solution of HBr (0.05 m ) at 298 K A) assuming ideal solute behavior. B) using the Deby- Huckel equation.
A gaseous compound containing hydrogen and carbon is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158mL of the gas, measured at 556 mm Hg and 25 degrees C is found to be .275 g. What is the molecular formu..
Which of the following molecules do you think would be subject to the Pauli principle's effects on rotational levels
Suppose a piece of silver jewlery contains 5.00 * 10^22 of silver. how many dozens of silver atoms are in the piece of jewlery.
A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. the final pH is measured to be 5.25. what are the contrations of acetate and acetate acid in solut..
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