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When 2.45 g of an unknown weak acid HA with a molar mass of 85.0g /mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C.Find Ka of unknown weak acid.
Write down the balanced chemical equation when Fe 3 O 4 reacted with carbon monoxide and calculate mass of carbon dioxide that will be produced in this reaction if 234 g carbon monoxide is reacted with excess Fe 3 O 4 ?
The activation energy for a reaction is found to be 80 kj/mol. calculate the temperature at which the rate will be ten times that of 0 deg. celsius.
At 295 K, Keq = 7.0 x 10-2 for the following equilibrium: NH4HS(s) ? NH3(g) + H2S(g) What is the equilibrium partial pressure (in atm) of H2S.
Determine the value of the solubility-product constant if solubility of T3U2 =4.24× 10-20 mol/L.?
At a certain temperature, a volume of 100 mL of saturated barium carbonate solution contains 0.00216 g of BaCO3 (MW=197.3 g/mol).
A 5.34 g sample of an aluminum alloy is reacted with hydrochloric acid to produce aluminum chloride and hydrogen gas. At a temperature of 298 Kelvin and a pressure of 1.03 atm, a volume of 1.53 L of hydrogen gas is collected.
Why does the absolute refractory period occur and What is happening in the cell.
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?
"If 2.3g of Sodium reacted with 1.8g of water, what would be the total mass of Sodium Hydroxide and hydrogen produced? Explain your answer"
Dissolves via the reaction and the temperature of the solution raises to twenty six degree celsius.compute the enthalpy change, , for this reaction per mole.
Gas diffusion and Viscosity are both transport properties, Derive the general relationship between the viscosity for a gas and diffusion coefficient .calculate the diffusion coefficient if Given that the viscosity of Ar is 223 micro Pascals at 29..
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