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A solution of 97 mL of 0.207 M KOH is mixed with a solution of 185 mL of 0.153 M NiSO4. How much precipitate forms? What is the concertration of each ion upon completion of the reaction. MK+ , MNi 2+, M sulfate ion, M OH-
The densities of Zn, Cr and Fe are 7.89, 7.20, 7.86 g/cm3 respectively. When a 96.7 gram sample of an unkown metal is placed in a graduated cylinder containing 20.0 mL water, the water level rises to 32.3 mL. What is this metal?
How are crops genetically modified? What are the health consequences of athletic supplements? How do fuel cells work? How does aspirin cure headaches?
base catalyzed reaction of vanillin with acetic anhydride? They produce slightly different products, but how and why
If the density of water is 1.00g/mL, what is the weight in pounds of gallon of water? you may assume that mass and weight are equivalent at the earth's surface.
A buffer contains significant amounts of acetic acid and sodium acetate. Write an equation showing how this buffer neutralizes added acid and added bases
At 20 degrees C, 0.164 mg of H2 dissolves in 100.0 g of water when the H2 pressure above the water is 1.000 atm. Find the Henry's law constant for H2 is water at 20 degrees C.
Use values of ksp and kf for copper (II) hydroxide and its complex to predict if a precipitate should form in a 0.1 M Cu2+ solution that is 3M in OH-
Predict the products of each of these reactions and write balanced molecular equations for each. If no reaction occurs
Find the absolute and percent relative uncertainty and express each answer with a reasonable amount of significant figures. What is the absolute value , absolute error and relative error of:
Given the values of DGfo given below in kJ/mol, calculate the value of DGo in kJ for the combustion of 1 mole of propane to form carbon dioxide and liquid water.
a) Assuming ideal behavior, what is the solubility of AgCl(s) in 1.00 x 10-4 M NaCl if only Ksp is considered? (b) What is the solubility AgCl(s) if all 4 equilibria are considered for the 1.00 x 10-4 M NaCl
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant.
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