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From the values of delta H and delta S, predict which of the following reactions would be spontaneous at 23 degrees celsius. Reaction A: delta H = 10.5 kj/mol, delta S = 30.0 J/K*mol Reaction B: delta H = 1.8 kj/mol, delta S = -113 J/K*mol
calculate the volume of nitrogen gas produced from 195.0 grams of sodium azide at 27.0 celsius and 836.0 mmHg pressure
whose temperature is 95 C and which contains 130g of liquid. Assume the specific heat capacity of the coffee is the same as that of water. The heat of fusion of ice
Which of the following is both a decomposition reaction and a reduction-oxidation reaction? a. H2CO3(aq) --> Co2(g) + H2O(l) b. Zn(s) + SuNO3(aq) --> Cu(s) + ZnNO3 (aq) c. Ca(OH)2(aq) + 2HCl(aq) --> CaCl2(aq) + 2H2O(l)
How many moles of CF4 can be produced when 5.00 mol C react with 12.00 mol F2.
A chemist wants to make 6.5 L of a 0.270 M solution. What mass in grams should the chemist use?
What is the pH of the solution when 50 grams of Ca(OH)2 was added to 1 liter of water? Ksp of Ca(OH)2 = 6.5 x 10^-6
The heat of fusion of ice (the heat associated with ice melting) is 6.0 kJ/mol. Find the temperature of the coffee after the ice melts.
Give the overall reaction for the dehydration of cyclohexanol.2. IR spectroscopy will be used to verify the isolated compound is the correct compound (cyclohexene). What stretches (presence and absence) will distinguish the product
What would be the hybridization for a molecule with a central atom that is bonded to 5 peripheral atoms and that has 3 nonbonding valence
Heating any of the three isomeric dimethylbenzenes with HF in the presence of BF3 to 80 C leads to the equilibrium mixture shown below: 1,2-Dimethylbenzene: 18% , 1,3-Dimethylbenzene: 58% , 1,4-Dimethylbenzene: 24%
What is the overall reaction rate order of the reaction in (2)? What is the difference between the (1) and (4)?
The water level in a graduated cylinder initially at 221 rises to 271 after a piece of lead is submerged. What is the mass in grams of the lead?
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