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1.Excess air for combustion is calculated using the assumption of complete reaction whether or not a reaction takes place.
2.For the typical combustion process the products are CO2 gas and H2O vapor.In combustion processes, since any oxygen in the coal or fuel oil is inert, it can be ignored in the combustion calculations
3. A friend of yours says HHV and LHV are the same for carbon monoxide. Is the statement correct?
4. The percent excess air will always be the same as the percent excess oxygen in flue gas.
5. There are 3 significant figures in 3.9400E9
6. A mole is the number of molecules in one gram of a substance
7. API gravity is proportional to the specific gravity of the fuel
8. Parr formula is used to determine the rank of coal by determining calorific value on a moist mineral free basis
Phosphate can buffer in three pH ranges. Give the chemical formulas of the buffer pairs and give the range in which each buffers. Start with H3PO4/ H2PO4-1
A compound, A, c6h8, yields a single organic product, B, upon ozonolysis and absorbs two moles of hydrogen on catalytic hydrogenation to give C
What volume of hydrogen gas, in liters, is produced by the reaction of 4.71g of iron metal with 60.0mL of 2.03 M HCl?
A vertical force of 7 N (in the negative z direction) is required to hold the deflector in place. Determine the mass (kg) of the deflector. Assume the velocity of the water remains constant.
A nucleus of mass number 27 contains 14 neutrons. An atomic ion of this element has 10 electrons in it. Write the symbol for this atomic ion
The peak was assigned as a Mn-Cl stretching mode of a contaminate manganese chloride species. Why would you expect this to be an erroneous assignment? Suggest a more likely source of this IR absorption.
What volume of 1.00M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.100M Na2Co3
Which description best characterizes the length of a hydrogen bond between water molecules?
What is the FORMULA for the limiting reagent? c.What amount of the excess reagent remains after the reaction is complete? IN GRAMS
A 100 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 * 10^-4
Borane forms complexes with sulfides and amines. Draw a suitable structure to represent the complex formed between BH3 and dimethyl sulfide
An oxide of manganese consists of 77.4% manganese by mass. Determine its empirical formula and enter it in the box below.
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