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A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
-0.0764°C
-0.189°C
-0.372°C
-0.564°C
-0.721°C
Considering the Heisenberg's uncertainty principle, compute the uncertainty in the position of: a 1.50-mg mosquito moving at a speed of 1.40 m/s (if the speed is known to within a + or - 0.01 m/s)
Iron reacts with chlorine gas as follows: 2 Fe (s) + 3 Cl2 (g) > 2 FeCl3 (s)
Draw the product of the reaction between 1-butyne and NaNH2 in NH3, then D3O+. To add a deuterium atom, first explicitly add an H.
Calculate k, Calculate also how long it would take for half of A to react. assume pseudo first order with k'=k[OH-], since [OH-] is in great excess.
Describe the mixture before it is centrifuged. Be specific using scientific words that aplly such as homogeneous or heterogeneous
A 45.0-rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?
Estimate the ratios of the basic and acidic forms of the histidine side chain
Assume that the metal rack is cooled from 240°F to 85°F, the temperature of the outlet water. The amount of heat removed from the retort walls in cooling from 240 to 100°F is 10 000 btu. Radiation loss from the retort during cooling is estimated a..
Differentiate between the dfferent bond types of orbital overlap required to obtain a sigma bond and pi bonds
dilute to mark with water and mix. (You will need the extra volume of this most concentrated solution for further studies.) Record your actual standard concentrations accounting for the dilution as Cstd1, Cstd2, Cstd3, and Cstd4, respectively.
16.2g iron(III) chloride reacts with 3.33g NH2OH in acid to produced N2O gas. a) Write a balanced, net ionic equation.
A titration was performed to determine the solubility product constant (Ksp) of an unknown iodide with formula . The first two steps of the reaction sequence are shown below:
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