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A 31.5g wafer of pure gold initially at 69.3Celcius is submerged into 63.5g of water at 27.4celcius in an insulated container. What is the final temperature of both substances at thermal equilibrium?
The rate constant for a certain chemical reaction is. 0.0125 L mol^-1 s^-1 at 25 degree Celsius and 0.0125 L mol^-1 s^-1 at 50.0 Celsius. What is the activation energy for the reaction, expressed in kJ mol^-1
If this arsenic is present as arsenate, AsO4^3-, what mass of sodium arsenate would be present in a 1.10L sample of drinking water that just meets the standard
Dissolve Ca(OH)2(s) into a 100 mL solution containing 2.00g of dissolved CaCl2. The satureated Ca(OH)2 solution has an equilibrium pH of 11.68. Determine the molar solubility and the Ksp for Ca(OH)2 from this single pH measurement.
100 mol/h of n-octane is burned in 80.0% excess air to 95.0% conversion. What is the molar flow rate of N2 in the stack gas if The n-octane is converted to a mixture carbon monoxide, carbon dioxide, and water, where the ratio of CO2 to CO is 4:1?
A 90.0 g piece of hot iron is placed in a calorimeter containing 125 mL water at 19.8 degrees celcius. If the final temperature of both the water and the iron is 24.6 degrees celcius, what is the initial temperature of the hot iron?
compound a has a solubility of 18 grams per 100 grams of water at25 celsius. cooling a saturated 200 g solution of
the compound x2y is only partially dissociated in water solution to form x and y2- ions. a 0.0100 m solution is found
How many salt complexes would result if you treated racemic phenethylamine with racemic tartaric acid? After treating them with NaOH and extracting
A person uses 750 kcal on a long walk. Calculate the energy used for the walk in each of the following energy units
Table salt, NaCl(S), and sugar, C12H22O11 (s), are accidentally mixed. A 4.50-g sample is burned and 2.90 g of CO2 (g) is produced. What was the mass percentage of the table salt in the mixture
Name 4 properties of a compound that is directly influenced by the polarity of the compond. And state the 2 most important factors that affect the
What would be the hybridization for a molecule with a central atom that is bonded to 5 peripheral atoms and that has 3 nonbonding valence
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