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A gaseous sample containing a mixture of only ethane and methylene fluoride, occupies a volume of 1.55L at 22°C.The partial pressure of C2H6 is 0.300 atm and that of CH2F2 is 0.250 atm. What is the total pressure and what is the Mole fraction of C2H6 in the mixture?
Which of the following are typically TRUE of an oxidizing agent? 1. It causes oxidation. 2. It gains electron(s). 3. It is the reduced substance. 4. all 5. none
Not all Friedel-Crafts reacts require a strong Lewis acid catalysts to generate the electrophile for the substitution reaction. Show, using curved arrows, how the electrophile is generated from t-butanol in the presence of H2SO4
suppose that coal of density 1.5 gcm3 is pure carbon. it is in fact much more com- plicated but this is a reasonable
A sample of air at 10.0 atm is heated from 575 K to 750 K. If the volume remains constant, what is the final pressure
an experiment requires 40.0 of ethylene glycol a liquid whose density is 1.114 . rather than weigh the sample on a
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
If Qp = 1.2 1020 and PO2 = 0.318 and PN2 0.812, what is the partial pressure of NO?
If Hg and 1.50g O2 are obtained from heating 56.0g HgO, what is the masspercent yield of O2 ? Hint work out the stoichiometry of the reaction first.
Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction: ?H3PO4 + ?Mg(OH)2->?Mg3(PO4)2 + ?H2O
How many grams of Na2EDTA·2 H2O (FM 372.23) should be mixed with 2.07 g of Ca(NO3)2·2 H2O (FM 200.12) in a 500 mL volumetric flask to give a buffer with pCa2+ = 9.00 at pH 9.00?
The enthalpy of hydration associated with anhydrous LiI forming LiI?2H2O is -45.53 kJ/mol. The enthalpy of solution for LiI?2H2O is -14.77 kJ/mol. What is the enthalpy of solution for LiI
Propose hydrogen bonding patterns that will explain how either U or C in a codon 3'-terminal position could wobble with G at the 5' terminal of an anticodon (structural diagrams are required). Which hydrogen bonded pair will be the more stable? Wh..
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