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Explain what is entropy and Why are we interested in entropy? Define what information can it tell us about chemical reactions?
A 21.2 g sample of a metal was heated to 61.98 degrees C. When the metal was placed in a constant-pressure calorimeter containing 30.0 g of water, the temperature of the water rose from 24.69 degrees C to 29.27 degrees C. Calculate the specific he..
he sample required 5.5 mL of 0.0019 M NaOH to titrate the sample to neutrality. What was the pH of the gastric juice?
The solubility of a slaked lime, Ca(OH)2, in water is .185g/100mL. What volume of .00400 M HCl is needed to neutralize 10.0mL of a saturated Ca(OH)2 solution
Each of 2 front tires in the car is filled with a different gas. One tire contains 116 g of helium, another tire has 160 g of unknown gas. How many times heavier is a molecule of the unknown gas than an atom of helium
What mass of calcium metal could be obtained from one kg of limestone that is 50.0% pure CaCO3?
Use the rydberg equation to calculate the wavelength in angstroms of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 3
What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.010 molar Na2SO4
Draw the organic product of the following reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide.
imagine that you have been hired as an efficiency consultant by a plant that produces ammonia using the haber
If all the {{N}}2 and {{H}}2 are consumed, define what volume of {{NH}}3, at the same temperature and pressure will be produced
Determine which is the limiting reagent and how many grams of excess reagent remain unreacted. Calculate the theoretical yield of the reaction
calculate the heat released when 176g of water at 23.0 degrees celsius are converted to ice at -10.0 degrees celsius?
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