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20.00 mL of 0.160 M HC2H3O2 (Ka = 1.8x10-5) is titrated with 0.200 M NaOH. What is the pH of the solution before the titration begins?
Make a prediction on the solubility of benzoic acid and 9-fluorinone in the two solvents used in this experiment. (The two solvents were NaOH and 6 M HCl)
How many milliliters of a 235 mL solution of 1.5 M AlCl3 must be used to make 61 mL of a solution that has a concentration of 0.5 M Al3+?
48.61g od maagnesium was dissolved in diluted sulfuric acid and 490g of MgSO4. 7H2O was isolated from the solution. How many percent of impurities did the metal contain?
A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL of water and 3 drops of phenolphthalein indicat..
aluminum may be formed by the passage of 60,714 C through an electrolytic cell that contains a molten aluminum salt.
write the net ionic equations for the precipitation reaction or reactions that occur. b) what are the spectator ions in the solution?
In the Lewis formula that minimizes formal charge, what is the formal charge on the sulfur atom in sulfur trioxide, SO3?
an element t burns in air with a blue flame forming white fumes which dissolve in water to form a solution that turns blue litmus paper red(t is not the actual symbol)
Electron dot formulae (Lewis structures) with only the valence electrons, show the bonding - Write balanced equations
When Methane is burned with oxygen, the products are carbon dioxide and water. If you produce 9gms of waterand 11grams of carbon dioxide from 4gms of methane only 16gms of oxygen were needed.
The reaction 2NOCl(g) → 2NO(g) + Cl2 (g) has an activation energy of 100.0 kJ/mol and a rate constant at 400.0 K of 8.5 x 10-6 mol-1 L s-1. Determine the rate constant at 450 K.
The density of ethanol is 0.7893 g/mL. Calculate the maximum work that could be obtained by burning 1.000 gallon of liquid ethanol
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