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At constant temperature and pressure conditions which one of the subsequent must be true in order for a reaction to be spontaneous?A. delta S > 0B. delta H >0C. delta G >0D. delta G <0E delta H < 0
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer. Determine the pH of a 0.018 M aqueous solution of aspirin. Ka = 3.2 x 10 -4
although we usually think of substances as burning only in oxygengas the process of rapid oxidation to produce a flame
The conductivity of KCl is given as kappa=1.413ohms^-1 m^1 and the conductance of this solution is given as 1408microSiemens.
The following reaction is used to generate hydrogen gas in the laboratory. If 243 mL of gas is collected over water at 298K and have a total pressure of 745 mm Hg, what madd of hydrogen is produced
A sample contains Ba3(PO4)2, CoS, AgCl, NH4Cl, and ZnS. Identify the precipitate after the addition of 6 M HCl, then H2S and 0.2 M HCl.
What molarity of aqueous calcium chloride solution can be expected to show the same conductivity as 0.0050 M aluminum sulfate at 12,500 units. What does the 12,500 units mean in this question?
Whats the cell potential when the Cu2+ conc. has fallen to .220M. What are the conc. of Pb2+ and Cu2+ when the cell potential falls to .350V
essentially converted to Cu(NH3)4 2+ ion, the voltage of the cell (E) goes up to 0.883 V and the Cu electrode is still negative. Find the residual concentration of Cu2+ ion in the cell.
a how many moles of sodium benzoate must be added to 2.5 l of .15 m benzoic acid to form a buffer whose ph is 4.46?
sulfuric acid reacts with aluminum hydroxide by double replacement.a. if 30.0g of sulfuric acid react with 25.0g of
The cup is a volume widely used by cooks in the U.S. One cup is equivalent to 225 cm3. If 1 cup of olive oil has a mass of 205 g, what is the density of olive oil in g/cm3?
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
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