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What are the industrial uses of iodine tetrachloride?
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution. The precipitate is filtered off, dried and
Sand and iron particales that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles
Determine the molar ratio of NaBH4 to benzophenone that you ACTUALLY used in the experiment. why do you think that it was necessary to use a greater molar ratio than the equations at the beginning
A 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to raise the t
The volume of a manifold used to transfer gases is calibrated using Boyle's Law. A 0.251-dm3 flask at pressure of 697 Torr is attached and after system pumpdown, the manifold is at 10.4 mTorr. The s
0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.50 M Ba(NO3)2. What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaC
The vessel contains 2.00 moles of hydrogen, 2.00 moles of argon, and 5.00 moles of methane. What is the partial pressure of hydrogen?
A compound gives a mass spectrum with peaks at m/z = 77 (40%), 112 (100%), 114 (33%), and essentially no other peaks. Identify the compound.
Calcium hydride, CaH2, reacts with water to form hydrogen gas. How many grams of CaH2 are needed to generate 13.0 L of H2 gas if the pressure of H2 is 770. torr at 16°C?
80.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.5, what is the mass of the steel bar?
When strongly heated, magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. Metallic deposits were found on the bottom of the container. What is the equation and
A 20 mL solution of Ti2+ (40 mM) can be oxidized by reacting with iron ions from FeCl3. A titration is performed with a saturated calomel reference electrode (S.C.E.) as the anode and a platinum wir
A tank at is filled with of carbon dioxide gas and of carbon monoxide gas. You can assume both gases behave as ideal gases under these conditions.
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
Why might this fire rekindle days later as someone tries to remove the residue with water? What chemical process is involved here?
When strongly heated, magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. Metallic deposits were found on the bottom of the container. what is the equation and
A solution is made up by dissolving 73 g of glucose in 966 g of water. Calculate the activity coefficient of glucose in this solution if the solution freezes at -.66 degrees C.
A zero-order reaction has a constant rate of 1.20×10-4 . If after 80.0 seconds the concentration has dropped to 7.00×10-2 , what was the initial concentration?
By referring to the figure , determine the mass of each of the following salts required to form a saturated solution in 250 g of water at 30 degrees C: a)KClO3, Pb(NO3)2, c) Ce2(SO4)3
Reacting 931 mol of SiO2 with excess carbon yields 29.6 kg of SiC. What is the percentage yield
Assuming that the other salts present in seawater are in negligible amounts, determine the pressure that must be exerted on seawater to desalinate it using reverse osmosis at 25oC.
A 0.50 mol sample of oxygen gas is confined a 0° C in a cylinder. The initial pressure in the cylinder is 1.0 atm. If the gas is compressed by a piston so that the final volume is 57.3% of the
Calculate the change in pH caused by adding 10.0 mL of 2.24-M HCl to 370. mL of each of the following solutions. a]Water b]0.14M C2H3O2^1- c]0.14M HC2H3O2 d] a butter solution of 0.14 M in each C2H
What function of acetic acid in rection to yield acetanilide? can it be changed to another acid?