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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?
Which elements exist as molecular species in their most stable states at 25 degrees C and 1 atm? iodine, magnesium, sulfur, cesium, carbon, oxygen, phosphorus, neon
What is the heat of combustion of the glucose expressed in kJ/mol C6H12O6? (1) +2.80x10^3 kJ (2) -2.80x10^3 kJ (3) -15.6 kJ (4) +65.4 kJ (5) -65.4 kJ The correct answer is B, however
Problem- A method for determining the quantity of dissolved oxygen in nautral water reequires a seris of redox reactions. Balance the following chemical equations in that series under the conditions indicated
Explain what happens when a solution containing chlorophyll pigments is acidified. A distinct darkening of the reaction mixture is observed from green to grayish. State a chemical reaction, which comprise structural formulas for the main organic m..
a 11.7 ml sample of a hcl solution has a ph of 2.000. what volume of water must be added to change the ph to
Question about Aromatic Compounds, Explain the following: a.) The cycloheptatrienyl anion is antiaromatic, whereas the cyclononatetraenyl anion is planar (in spite of the angle stain involved)
what would be a procedure to go by for the reaction of 2 methyl 2 octene with Hbr and what solvents could be used
Determine the limiting reactant and also calculate how much of the gas is produced?
2-bromooctane in 10 mL ether solution gave an observed rotation of -1.8° in a 10 cm cell at 20°C. Calculate the specific rotation of this solution.
Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1700 g of frozen water at 0 degrees C , and the temperature of the water at the end of the ride was 32 degrees C.
The mass of NaNO3 used is 8.5866 grams. Calculate q(system), using 4.184 J/(g x C) and 1.0 g/mL for the specific heat and density of the solution and 1.0 x 10^1 J/C for the heat capacity of the calorimeter.
A 320. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 59°C?
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