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Air enters a control volume operating at steady state at 1.2 bar, 300 K, and leaves at 12 bar. 440 K, with a volumetric flow rate of 1.3 m3/min. The work input to the control volume is 240 kJ per kg of air flowing. Neglecting kinetic and potential energy effects, determine the heat transfer rate, in kW. Evaluate the properties of air using variable specific heats.
A chemical reaction has k=9.3*10^-5 1/M sec at 200 degrees C, if the activation energy Ea=99 kJ/mol, what is the value of k at 130 degrees C
Calculate the % by mass and the molarity of a MgCl (lower subscript 2) solution made by dissolving 10.8 g MgCl (lower subscript 2) in 10.0 mL of water (density H20 and solution 1.00 g/mL). Calculate the molarity of chloride ion in the solution.
Is the radial node of the hydrogen 2s wavefunction inside or outside (relative to the nucleus) of the most probable radius of the 1s state?
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases.
Given the three formation equations and their enthalpy values, calculate the enthalpy of the given reaction.
draw the structures of the six diastereomers of the truxinic acids and the five diasteromers of the truxillic acids, clearly showing the photochemistry
How would not allowing the crucible to cool to room temperture before weighing the product affect the outcome of the experiment. How would touching the crucible with your fingers before weighing the final product affect the outcome of the experiment
The two products formed are 2-methyl-1-hexene (19%) and 2-methyl-2-hexene (81%). Show the chemical equation for this reaction. Explain fully why 2-methyl-2-hexene is the major product.
A 4.20L sample of neon gas at 15 degrees C is at a pressure of 790mmHg. If the gas is compressed to 1.50L and the temperature of the gas is raised to 195 degrees C, what will the new pressure be
Calculate the enthalpy change for this reaction per mole of "X". Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 J/g*C and 1.00g/mL ] and that no heat is lost to the calorimeter itself, nor to ..
The mass of the piston and the effects of atmospheric pressure acting on the piston are such that a pressure of 500 Kpa is required to to raise it. How much energy must be transferred by heat to the helium, in KJ before the piston starts to rise? ..
State the conditions under which all derivatives of benzene like chlorobenzene, benzoyl chloride and chlorophenyl methane would react with sodium hydroxide.
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