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Can someone please explain why dissolving potassium nitrate is an endothermic reaction while dissolving sodium carbonate is exothermic? Can this be describe overall and then on a molecular and bonding scale.
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution contatining 0.070 lysine HL 0.055 mol aspartic acid H2A and 0.0080 mol NaOH.
What is the ph of the solution which results from mixing 50 ml of .30 m hf and 50 ml of .30 m naoh at 25 degrees Celsius? (kb of f= 1.4x10^-11)
The tosylate of (2S, 6S)-1, 2, 6-trimethylcyclohexanol undergoes an E2 elimination on treatment by sodium ethoxide. Depict the structure of the alkene that is produced.
Is it necessary to use the same solvent to dissolve the sample as is used to develop the tlc plate(TLC). Why
a written account of how the crude product was isolated. How the crude product was purified and an evaluation of the efficiency of the purification.
Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 + 3H2 >> 2NH3 If the reaction yield is 87.5% , how many moles of N2 are needed to produce 3.00 mol of NH3?
When NH4NO3 dissolves in H2O, would you predict that the energy needed to break the ionic bonds and separate the water molecules (H1 and H2) to be greater or less in absolute value than the energy released (H3) when the water-ion interactions o..
calculate the amount of energy in kilojoules needed to change 243 g of water ice at -10 rm circc to steam at 125 rm
hot methanol and then stored the recrystallization solution until the next lab period. What possible effect on your results due to this experimental error could take place?
When 1.441 g of this compound (molar mass = 195.80 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.337 degrees Celsius. What is the heat capacity (calorimeter constant) of the calorime..
Heat energy is added to a , 352g block of nickel, and the temperature increases from 21 C to 53 C. If the same amount of heat was added to the same mass of water at the same temperature, what would the water's final temperature be
What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?
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