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(a) Express the second law of thermodynamics in words.
(b) If the entropy of the system increases during a reversible process, what can you say about the entropy change of the surroundings?
(c) In a certain spontaneous process the system undergoes an entropy change, ?S = 42 J/K. What can you conclude about ?Ssurr?
Determine the total number of valence electrons in each of the following: a) SBr2; b)NBr3; c) CH3OH; d) NH4^+.
In performing a superconductor lab with Yttrium oxide, barium peroxide, and cupric oxide, explains what is the importance of compressing the pellet for a solid-state reaction? Explain what would be the difference between reactions in solution and ..
the heat of solution of lithium carbonate is 3.06kjmol solute in 200 moles of h2o. what effect would you expect
If 29.1 mL of 0.4 M NaOH is used to reach the endpoint when titrating 20.1 mL of acetic acid, what is the concentration of the acetic acid in moles/L
A gas occupying 28mL at standard conditions is heated to 18C while the pressure is reduced to 0.98221 atm. What is the new volume occupied by the gas? Answer in units of mL.
Why is the number of microseconds in a week NOT considered an exact number? Aren't there 10^6 microseconds in a second, 3600 seconds in an hour, 24 hours in a day, and 7 days in a week?
The molar heat capacity of silver is 25.35 J/mol (degrees C). How much energy would it take to raise the temperature of 11.8g of silver by 16.2 degrees C
how many liters of ethylene glycol ch2ohch2oh should be added to a car radiator that contains a total of 6.5 l of
Which of the two. Cloud droplets or raindrops are expected to be more effective in scavenging gases from the atmosphere. Explain your reasoning
If I have 7.6057 grams of helium gas held at a temperature of 5 atm and in a container with a volume of 50 liters, what is the temperature
Question- An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of 11.8°. If it is known that the specific rotation of the R enantiomer is -30.8°,
Use the data below to calculate the value of Kc H2(g) 2 H(g) Kc = 0.00473 1/2 H2(g) + 1/2 O2(g) OH Kc = 0.643 Give your answer to 3 significant figures
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