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Consider an ice cube weighing 18g initially at T=0 C transderred into a well-insulated container at T=20 C and P= 1 bar that had about 24 L of air. The whole system reaches equilibrium in the end. You may assume that the container does not allow for heat exchange with the surroundings (heat excahnge between ice and air inside container is allowed) The heat of fusion of water is (delta)H fus= 6021 J/mole at 0 C and heat capacity of water liquid is 4.18 J/ (K x g)
a) Assume the total heat capacity of the air C air=30 J/K. Describe what's the likely ice will ne after the system reaches equilibrium.
b) Estimate theliekly final temperature after reaching equilibrium
c) How much ice will be melted? How much ice will remain?
At a certian temperature and pressure, chlorine molecules hav an average velocity of 0.0610m/s. What is the average velocity of sulfur dioxide molecules under the same conditions.
Diethyl amine density (1.0475 g/mL) Diethyl amine MW 73 Diethyl ether density (0.714 g/mL) Hint: Consider at which temperature the reaction is run. Which of the boiling points and melting points might come into play?
It takes 50.0J to raise the temperature of an 12.0g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
The element Na has bcc packing with a body-centered cubic unit cell. The density of sodium is 966 kg/m3. Calculate the volume (m3) of the unit cell of sodium.
Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.
Write the rate laws and determine the units of k (the rate constant) for the following reactions: (a) The reaction A + 2B --> C is found to be second order in A and B, and third order overall
calculate A) the molarity of sodium B) the molarity of magnesium acetate C) the molarity of acetate ion in each solution
Write chemical formulas for (a)lithium bromide,(b)calcium sulfide,(c) sodium sulfide,(d)beryllium oxide,(e) the chlorine molecule
What is the concentration of the dilute aspirin? a. What is the concentration of the aspirin in the dilute aspirin solution? b. What is the concentration of the original solution ? C. How many mg of aspirin are present in one tablet of Brand Y asp..
calculate the mole fraction of toluene in the solution that contains 126g toluene and 94g benzene
Write a balanced equation for the combustion of butane gas. If at a given moment butane is reacting at a rate of 0.400 mol L?1s?1, what are the rates of formation of products?
The specific heat of aluminum is 0.21 cal g°C. How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 to 10 °C?
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