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Calculate the pH of each of the following buffered solutions.
a. 0.10M acetic acid/0.25M sodium acetate
b. 0.25M acetic acid/0.10M sodium acetate
c. 0.080M acetic acid/0.20M sodium acetate
d. 0.20M acetic acid/0.080M sodium acetate
Calculate the minimum number of grams of propane,C3H8 (g) , that must be combusted to provide the energy necessary to convert 3.15kg of ice at -15.5degC to liquid water at 75.5degC. C3H8 (g)
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..
A balloon is floating around outside your window. The temperature outside is 1\, ^{\circ}C , and the air pressure is 0.700atm . Your neighbor, who released the balloon, tells you that he filled it with 3.20moles of gas. What is the volume of gas i..
If 4.49 g NaNO3 is dissolved in enough water to make 250 mL of solution, what is the molarity of the sodium nitrate solution
Classify the following room-temperature reactions as homogenous catalysis or heterogeneous catalysis: reaction of carbon monoxide and oxygen in a presence of platinum
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C
Calculate the work in Joules when 2.5 mols of water vaporizes at 1 atmosphere pressure and 25 degrees C. The work is done in pushing back the atmosphere.
suppose that a hypothetical element consists of a mixture of two isotopes. one isotope having mass 44 amu is present in
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0690 g/L. What is the Ksp of this salt at this temperature
A voltaic cell is constructed with a Mg/Mg2+ (Eo = -2.370 V) half-cell and the Au/Au3+ (Eo = +1.500 V) half-cell. Which statement is correct for the spontaneous reaction
You have a solution of 0.085 M HNO2 and 0.15 M KNO2 (Ka for HNO2 = 4.5 * 10-4) what is the pH
The resulting solution required 40.70 mL of 0.08765 M AgNO3(aq) to precipitate the Cl^- (aq) and Br^- (aq) as AgCl(s) and AgBr(s).
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