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650 J of heat are transferred into the system and the system does 345 J of work on the surroundings. What is the change in internal energy of the system.
Stretched rubber band Touch the relaxed rubber band briefly to your upper lip. Quickly stretch your rubber band and immediately touch the stretched rubber band to your upper lip again
Voyager 7 has obtained the composition of the atmosphere of Titan, Saturn's largest moon. The total pressure is 1220 mm Hg and the atmosphere
When a neon atom is electrified, the electrons jump to higher orbits. One of the electrons falls from an outside orbit to an inside orbit giving off red light with a wavelength of 7.34 x 10-7 m. Calculate the frequency of the red light given off b..
What is the molarity of a sodium hydroxide solution if 34.26 mL react with 0.337g of sulfamic acid
Using the Henderson-Hasselbalch equation, calculate the pH of an ammonia buffer when the NH3:NH4+ ratio is 0.4 moles:0.6 moles. (pK = 9.75). Please explain and will rate lifesaver.
Consider the following precipitation reaction 2 Na3(PO4)2(aq) + 3CuCl2(aq) ----> Cu3(PO4)2 (s) + 6 NaCl (aq). What volume of 0.168 M NaPO4 solution is necessary to completely react with 91.4 mL of 0.117 M Cucl2
normal glucose levels in the blood are from 70 to 10 mg glucose per 100 mL of blood. If the level falls too low, there can be brain damage.
which solution would show the greatest change in pH upon the addition of 15.0 mL of 1.0 M HCl to 1.0 L of each of the following solutions
Based on the results below, what is the charge of the electron in zorgs ()? Drop # Charge A ?5.1×10?9 B ?1.0×10?8 C ?6.8×10?9 D ?1.36×10?8
Traffic gets heavier, and the last part of the trip takes another half-hour. What was the average speed during this leg of the trip?
Calculate the concentrations of all species at equilibrium for each of the given original mixtures. 1.2 mol of NOCl and 1.2 mol of NO in a 1.0-L flask? K = 1.6*10^-5 mol/L
if a 1.201 g sample of aluminum metal is heated in a chlorine gas atmosphere the mass of aluminum chloride produced is
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