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Calculate pH of 350ml of a .29 M acetic acid .29M sodium acetate buffer before and after the addition of a) .0070 moles KOH and b) .0070 moles HBR a strong acid. Assume volume remains constant
If a reaction mixture initially contains 486 of and 261 of , what is the mole fraction of when equilibrium is reached.
a sample of gaseous SiH4 weighing 0.425g is placed in a 580 mL container. The resulting pressure is 0.61 atm.What is the temperature in degree celsius.
Derive the symmetries of the ligand σ orbitals for an octahedral complex. Draw the MO diagram for Cr(CO)6 showing σ bonding only.
Calculate the entropy change associated with the isothermal expansion of 5.40 mol of ideal gas atoms
what is the partial pressure of helium? If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
Sodium sulfate dissolves as follows: Na2SO4(s) 2Na+(aq) + SO42- (aq). How many moles of Na2SO4 are required to make 1.0 L of solution in which the Na concentration is 0.10 M.
It decomposes into its elements. Write the balanced equation for this reaction. If 71.8 g of Hgo is decomposed, calculate the volume of oxygen at STP
What substance is in excess? D) How many grams of the excess reactant is leftover (remaining) after the reaction stops
The calculations are based on the principal components of meat being fat ( acetone soluble) and protein (acetone insoluble or fat-free meat in report sheet ). ... information, the calculations correctly calculate what quantity, % fat or % fat-free..
Calculate the vapor pressure of a solution prepared by dissolving 0.75 mol of safrole in 950 g of ethanol (46.07 g/mol)
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Compute the mass of Trisodium phosphate required to remove all Ca^2+ ions from 2.50 Litres of the H 2 O sample?
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