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If in a decompositionreaction, one sample of magnesium fluoride produced 1.66kg of magnesium and 2.58kg of fluorine. A second sample produced 1.27kg of magnesium.How much fluorine (in grams) did the second sample produce?
What is the identity of the precipitate and what is the change in enthalpy of the reaction per mole of copper? Assume the calorimeter absorbs negligible quantity of heat and the specific heat and density of the solution are that as pure water.
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
"Given the following standard reduction potentials, E°redAl3+/Al = -1.66 V. E°redCr3+/Cr = -0.74 V.
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
Based on the reaction of halide ions NaI,NaBr,NaCl with KMnO4 rank the three halide ions in order of decreasing reducing agent strength. Use to indicate greater strength and = to mean equall strength.
How many grams of NaCl must be added to 250g water to lower the vapor pressure by 1.30 mm Hg at 40 degrees C assuming complete dissociation?
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 1.7 L of a solution that is 97 ppm in KNO3?
Consider a case where methyl tertiary butyl ether (MBTE) is to be added to the conventional gasoline. What percentage of MBTE would be required to achieve the 2.7
In a laboratory investigation involving a neutralization reaction, a scientist adds potassium hydroxide to nitric acid (balanced reaction following):
Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500. mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M.
sample containing 4.80 g O2 of gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
constitutionally isomeric ketones that have the molecular formula C4H8O2
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