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Calculate the pOH and pH at 298K of solutions having the following ion concentrations.OH = 1.3 times 10 to the negative 2 power M
What amount of HCl gas must be added to 1.00 L of a buffer solution that contains [acetic acid] =2.0 M and [acetate]=1.0 M in order to produce a solution with pH =4.24
In the reaction of lithium, li with nitrogen n2 three lithium atoms react with on nitrogen atom elements lose one electron, atoms of the other element gain three electrons
gaseous sulfur trioxide can be catalytically decomposed by flowing the gas down a heated tube. the reaction depends on
Why do you think the enthalpy of activation, H ‡ , for a syn-periplanar elimination is higher than that for an anti-periplanar elimination
Phosphorus-32 has a half-life of 14.0 days. Starting with 2.00g of P^32, how many grams will remain after 70.0 days? Express your answer numerically in grams.
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
A gas mixture with a total pressure of 750mmHg contains each of the following gases at the indicated partial pressures:CO2 , 133mmHg ; Ar,215mmHg and O2,177mmHg
Calculate the wavelength of light necessary to provide photons of this energy? C) Explain why this film can be handled in a darkroom under red light.
Glass will dissolve in concentrated solutions of either NaOH or KOH. At 25C the two reactions below tae place at the same rate. 4NaOH + SiOH2 -->Na4SiO4 + 2H2O is reaction 1. reaction 2 is 4KOH + SiO2 ---> K4SiO4 + 2H2O
How can you find the pI of an amino acid when there are four ionizable groups on the same molecule?
If a solution is made with 0.125M magnesium nitrate, (Mg(NO3)2), and 0.100M aqueous ammonia (NH3) will a precipitate of magnesium hydroxide form Ksp= 1.1e-10 Kb= 1.8e-5
What Celsius temperature,T2 , is required to change the volume of the gas sample in Part A ( = 37 , = 1560 T1=37C, v1=1560L) to a volume of 3120 L? Assume no change in pressure or the amount of gas in the balloon. in C?
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