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For each of the following processes, indicate whether the signs of S and H are expected to be positive, negative, or about zero.
(a) An explosive is detonated in a sealed container and the container becomes hot.
(b) Some nitrogen gas and some oxygen gas held in separate containers are allowed to mix.
(c) 1 mol CH4(g) and 2 mol O2(g) is formed from 1 mol CO2(g) and 2 mol H2O(l).
(d) An unstable liquid decomposes generating a gas and liberating heat.
(e) Liquid is formed by compressing a refrigeration gas.
At 20 degree celcius, how many dissociated H+ ions are there in 167ml of an aqueous solution whose ph is 12.17? and At 25 degree celcius, how many dissociated H+ ion
re-establish equilibrium conditions as described: The pressure if the system is increased by decreasing the total volume. a) shift to the left b)shift to the right c) no change
an aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
acetic acid has one carbon- oxygen bond that is 1.36 A nd another 1.23 A however sodium acetate has two equal carbon- oxygen bonds
The electophilic addition reaction of conjugated dienes that occurs at low temperatures and/or short reaction times is said to be under what? A)thermodynamic control B)kinetic control C)1,2-additon control D) 1,4-addition control
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
A sample of a gas weighs 2.006 g and has a volume of 1060.0 mL at 795.0 torr and 32.0 degrees Celsius. What is its molar mass?
A weak monoprotic acid is titrated with NaOH and the following data is recorded. Calculate the molar mass of the weak acid.
What is the pH of a solution which results from mixing 150 mL of 0.50M acetic acid and 150 mL of 0.50M sodium hydroxide at 25oC?
what would "standard conditions" for this galvanic cell be. If the cell is at standard conditions, determine the cell potential(E cell).
When the solvent is removed from a sample solution, 3.0 mole of substance B, 7.5 moles of substance C, and 15.0 moles of substance A are left in the solution. What is the mole fraction of substance A in this new solution?
Calculate the specific heat capacity of a sample liquid if this 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 degree Celsius to 70 degree Celsius?
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