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If 34% of molecules at 20 degrees celcius have enough energy to overcome the activation energy barrier for a particular reaction, what is the activation energy for this reaction?
What is the silver ion concentration in a solution prepared by mixing 357 mL of 0.392 M silver nitrate with 469 mL of 0.504 M sodium phosphate?
Select the most appropriate explanation of the following observation on solubility: "Hydrogen chloride, HCl, is very soluble in water." Water is a polar solvent, and it promotes the ionization of many polar molecules.
Identify the limiting and excess reactions and how many grams of the excess will be unused.
A 32.0-g sample of water at 290. K is mixed with 48.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
What is the total electronic energy
If it takes 4.67 times as long for a particular gas to effuse as it takes hydrogen under the same conditions, what is the molecular mass of the gas?
Gallium is a metal with a wide variety of uses. Some of its applications include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors.
In one experiment, 11.5 g of NO formed when 112.4 g of each reactant was used. What is the highest percent yield of N2 that can be expected?
How much heat energy is needed to raise the temperature of 2.01 Kg of this oil from 23 C to 191 C?
when mixture A at 273 K is heated to 473 K, mixture B results. How many different chemical changes occur? How many different physical changes occur?
From the ration of the mass of the black product to the initial 5g placed in the flask, could the remaining black compound be the anhydrous copper carbonate hydroxide molecule?
Calculate the mass of sugar and salt in the original mixture. The other answer posted to the other time this questionw as posted seems to be incorrect.
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