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Consider the following unbalanced redox reaction: Cr2O7 2-(aq) + Cu(s) --------> Cr3+(aq) + Cu2+Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g Cu .
a sample of helium gas initially at 37 degrees celsius, 785 torr and 2.00L was heated to 58.0 degrees celcius while the volume expanded to 3.24L. What is the final pressure in atm.
VO2 can exist in insulating or metallic form, depending on temperature and pressure.
hammered into a thin sheet to be used as aluminum foil. If the thickness of the aluminum foil is uniformly 13 um, what area of aluminum foil (in cm^2) can be made? The density of aluminum metal is 2.969 g/cm^3.
Given the reaction of aA+bB-->cC, if "d" moles of A are combined with excess B, how much C can be formed?
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. Express your answer using four significant figures
What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength
How many liters of water are required to dissolve 5.55 grams of KOH and make a solution with a pH of 11.63
Barbituric acid (ka = 1.1x10^-4) is used in the manufacture of some sedatives. For a 0.6733 M solution of barbituric acid, calculate
Calculate the formula for each of the following halogen compounds to five or more significant figures
Convert lb mol CaC2 feed to lb and calculate lb inerts added. The total lb solids in the slurry is then the sum of the Ca(OH)2 plus inerts. In calculating the water added, remember that some is consumed in the reaction.]
Ammonia reacts with oxygen gas to produce water and nitrogen gas. What mass of oxygen gas must be used to react with 19g of ammonia
What is the difference between July and January temperatures in the Celcius scale? What is the difference between July and January temperatures in the Kelvin scale?
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