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1) 20.0 mL of a 0.10M weak acid (Ka= 1.56X10^-6) is titrated with a 0.20M strong base.
a. What is the pH initially, before any titrant is added?
b. What is the pH after 5 mL of titrant is added?
German physicist Werner Heisenberg related the uncertainty of an object's position (?x) to the uncertainty in its velocity ?v. The mass of an electron is 9.11× 10-31 kg. What is the uncertainty in the position of an electron moving at 3.00 × 10^6 ..
At a given temperature,0.0500 mol NO, 0.200 mol Cl2, and 0.550 mol CINO were placed into a 1.00 L container. The equilibrium below was established and 0.250 mol of CINO is present. Determine the equilibruim constant (Kc).
Some alloys of early and late transition metals (e.g., ZrPt3) have much higher enthalpies of vaporization (per metal atom) than either of the pure metals
Determine whether each of the following causes an increase or decrease in the activity of the electron transport chain. large difference in H+ concentration across the inner mitochondrial membrane
What is the empirical formula of the compound if a 5.56 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 12.64 mg of CO2 and 5.16 mg of H2O
How would you write a balanced chemical equation using structural formulas to show how acetic acid reacts weakly with water to transfer a proton and produce a hydronium and an acidic ion?
A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 c. what pressure will the sample exert when it is compressed to 250 mL and cooled to -25 degree celsius.
What happens to the interference pattern that results from the diffraction of electrons passing through two closely spaced slits if the rate of electrons going through the slits is decreased to one electron per hour
When 33.5 mL of 0.580 M H2SO4 is added to 33.5 mL of 1.16 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate ?H of this reaction.
Regarding the reaction of the products that correspond to syn addition of Br2 to trans cinnamic acid and those that correspond to anti addition, why would you isolate a pair of enantiomers rather than a single enantiomer from this reaction
To maintain electric neutrality, you add a KNO3 salt bridge separating the two half-cells. Use this information to solve Parts B, C, and D. Part B The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reac..
Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 25 C and a pressure of 755 mm Hg
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