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A 340 g aluminum cup holds and is in thermal equilibrium with 750 g of water at 83°C. The combination of cup and water is cooled uniformly so that the temperature decreases by 1.5°C per minute. At what rate is energy being removed by heat?
odium carbonate (Na2CO3) can be produced by heating sodium bicarbonate (NaHCO3). A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate.
Using extraction techniques how would you separate a mixture of aniline and toluene using dichloromethane as the extraction solvent?
The specific heat capacity of silver is 0.24 J/°C · g. (a) Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K.
a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
Experiment you measured teh effect of changing temperature on the pressure of a conatined gas at constant volume.
write the lewis symbol for hydrogen sulfide, distributing the remaining valence electrons so that the hydrogen atoms are in accordance with the duet rule and the sulfur atom is in accordance with the octet rule.
describe the underlying concepts of how laboratory activity works. descreption should be at least half page
Arrange the following 0.1 M solutions in order of increasing conductivity and explain why you chose this order: 0.1 M FeCl3, 0.1 M MgCl2, 0.1 M NaCl, 0.1 M glucose (C6H1206)
If you added 75ml of a 0.555M solution of NaCl to enough water to produce 950 ml of solution, what would be the resulting molarity?
Concentration of H 2 is observed 2.15 moles/L When the reaction N 2 (g) + 3 H 2 (g) ?? 2 NH 3 (g) comes to equilibrium. Determine the numerical value of the Kc equilibrium constant?
A beaker with 120 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.50 mL of a 0.250 M HCl solution to the beaker. How much will the pH..
Calculate the No. of moles of KHP? (b) How many moles of NaOH will react with the KHP in dissolved water? (c) Calculate the molarity of the NaOH solution?
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