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A particular sample of red brass consisting of 81.0% Cu and 19.0% Zn by mass has a density of 8780 kg/m^3. What is the molality of Zn in the solid solution?
For each species listed, indicate the hybrid orbital set (sp2, sp3d, etc) employed by the central atom
Calculate the mass of KI in grams required to prepare 4.00 102 mL of a 2.80 M solution.
Write a formula for the conjugate base formed when each of the following behaves as a bronzed acid.
A gas is placed in a storage tank at pressure of 30.0 atm at 20.3 degrees Celsius. As a safety device, there is a small metal plug in the tank made of metal alloy that melts at 125 degrees Celsius.
the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule?
You have given some aqueous solutions as a. LiClO4 b. HClO c. CH2CH3OH d. HClO4 e. HNO3 you just need to Classify each of the given aqueous solutions as a weak electrolyte, non electrolyte, or strong electrolyte ?
Calculate the pH of 1.00 L of a buffer that is 0.130 M HNO2 and 0.190 M NaNO2. What is the pH of the same buffer after the addition of 1.00 mL of 12.0 M HCl. (pKa of HNO2 = 3.40)
You need 70.2 J to raise the temperature of 34.0 g of ammonia from 23°C to 24°C. Calculate the heat capacity of ammonia.
Write the nuclear equation for the alpha decay ( production of radioactive decay that may be considered radioactive waste products by the useful production of nuclear energy ) of each nuclide that are products of a nuclear power plant Rn-222, T..
What weight of A would be removed by four successive extractions with 25-mL portions of ligroin? How much ligroin would be required to remove 98.5% of A in a single extraction?
How many grams of Ba(OH)2 will be needed to neutralize 76 mL of stomach acid if stomach acid is 0.14 M HCl?
Draw a doagram to show the changes in potential energy that occur from the rotation around the C1-C2 bond of 1-bromopropane.
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