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Assume that coal is pure carbon with a density of 1280 kg/m3 and that the particle is spherical with an initial diameter of 0.015 cm. Air exists several diameters away
1) Nco= ____Noxygen
2) The more fraction of oxygen at the particle surface in the gas phase is ?
3) the mole fraction of oxygen in the bulk gas phase is?
What is the mass in grams for each of the following: a) 5.12 mol of Al, b) .75 mol of Cu, c) 3.52 mol of MgBr2, d) 0.145l of C2H6O, e) 2.08 mol of (NH4)2SO4.
You have 4 ml of a 0.35 M solution. You take 50 µl of the solution, and add 8 ml of water. How many ‘fold' have you diluted the solution. What is the concentration of the diluted solution
carbon dioxide which is recognized as the major contributor to global warming as a greenhouse gas is formed when fossil fueels are combusted, as in electrical power plants fueled by coal, oil, or natural has.
Glycine has a standard entropy of 103.5J/K/mol and methylamine has standard entropy of 243.41 J/K/mol. How is this possible if glycine has a higher heat capacity.
What is the number average degree of polymerization at the theoretical gel point which is predicted by the theory? (10 points) Hint: Use the regular definition of the number average degree of polymerization, ; x n (x n )t = Total # of structural u..
Explain how do you predict the bond angle of a molecule. For example how do you know if the bond angle of H2O is 109 degrees or less than 109 degrees
Why is it important to the place the thermometer bulb at in the lower part of the Hickman still head. What will happen if you place it either a)too low or b)too high in the condenser
If only atmospheric CO2 at 380 ppm and limestone dust are present in the atmosphere to alter the pH from a neutral value, and if each raindrop has a volume of 0.02 cm^3, what mass of calcium is present in each raindrop
a piece of copper metal weighing 145 grams was heated to 100.0c and then dropped into 250. grams of water at 25.0 c.
Magnesium metal (Mg(s)) burns brightly in oxygen gas (o2(g)) to produce a whitish-grey powder, magnesium oxide (MgO(s)). Write a balanced chemical equation for this reaction. 2. Magnesium metal (Mg(s)) will also react with copper ion in solution (Cu+..
What is the osmotic pressure of a homogenous solution at the temperature At 25 o C, as this solution is consisting of 21.0 g urea
A fire power plants burns 10,000 tons of coal containing 2% S per day with 10% excess air. How many wet limestone are needed to remove SO2?
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