Determine the final concentration
52.0 mL of a 1.70 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 169 mL of water. What is the final concentration?
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A 350. mL air sample collected at 35 Celsius has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 57 Celsius .
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead?
Suppose you have equal volumes of saturated solution NaNO3, Na2SO4, and PbS. which solution would dissolve the most with PbSO4?
Describe the structure and workings of the Highland Maya cargo system. Is it a true leveling device for modern Maya society? Why or why not?
In a certain oil spill, hydrocarbons from the oil disappeared with a first-order rate constant of 2 ^ 10 -6 s -1. How many days did it take for the oil spill to decrease to 10% of its initial value?
Sketch showing the acceleration of the canon ball over time if it was fired at 30°, 45° and 60° above the horizontal.
A molecule has an excited state electronic energy level that emits radiation of 1/λ = 360 cm-1 when it falls to the ground state. The ground state is non-degenerate and the excited state is doubly degenerate. Calculate:
Why is the first step in an electrophilic aromatic bromination reaction so much more endothermic than the first step in an electrophilic addition to an alkene?
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