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Weak acid , determination of KaHey there. I am having trouble with this question.
Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, and inherited disorder that can cause mental retardation or even death. A 0.085 M (mol/L) solution of C6H5CH2COOH has a pH of 2.68. Calculate the Ka value for this acid.
Calculate the mass of hydrogen per oxide needed to obtain 0.460 L of oxygen gas at STP. 2H2O2(aq) → 2H2O(l) + O2(g).
A zero-order reaction has a constant rate of 3.20×10-4 . If after 60.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
Draw a series of titration curves for the titration of a strong base with a strong acid where the concentration of the acid is 10 -1 , 10 -2 , and
The heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) 2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
how much of this chemical would have been measured? Express in terms of measured concentration C (mg/litre) of the filtered sample?
The temperature is increased to 45 degree celcius then determine what is the pressure in the cylinder
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
Calculate the partial pressure of carbon dioxide after cooling back down to the initial temperature and the mass percent, the mole fraction, and .
The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
Rubidium has two naturally occurring isotopes with the following masses and natural abundances, Calculate the atomic weight of rubidium.
What mass of Fe will form when 63.0g of CO reacts with 145g of Fe2O3 according to the following equation? 3CO+Fe2O3->2Fe+3CO2.
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