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The vapor pressure of is 100 at 5.4, and the normal boiling point is 56.8 . what is enthalpy in vaporation in kj/mol?
In a saturated solution of lead (II) fluoride the concentration of lead was measured to be .0021 M. What is the value of Ksp for PbF2?
.Alkenes can have cis-trans isomerism. b.Alkenes are chemically reactive at the double bond. c.Alkenes are nonpolar compounds. d.Alkenes are less dense than water
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected.
Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 32 degrees C?
When 4-hydroxybutanal is treated with methanol in the presence of an acid catalyst, 2-methoxytetrahyrofuran is formed. Show the mechanism for this reaction.
Calculate the No. of moles of KHP? (b) How many moles of NaOH will react with the KHP in dissolved water? (c) Calculate the molarity of the NaOH solution?
Draw the valence electron structures (Lewis structures) for the following atoms: Magnesium, Carbon, Bromine, Neon.
If the reaction of 2.50 g of aluminum with 2.50 g of oxygen produced 3.50 g of aluminum oxide, What is the % yield of the reaction?
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
If 7.63 of an unknown gas occupies 79.1mL at 25.02 degrees celcius and 7.55 atm of pressure, what is the molar mass of the gas? R=0.0821
Solving this question helps the student to understand how to find molecular formula using moles and mass and What is the molecular formula of this compound?
For the equilibrium H2(g)+ CO2 (g) H20 (g) + CO(g) Kc = 3.18 at 1106K. If each of the four species was initially present at a concentration of 3.000M, calculate the equilibrium concentration of the CO(g) at this temperature
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