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Antimony is alloyed with lead to increase the rigidity ofcomponents used in the construction of lead storage batteries.2.668 g of a particular metallic alloy, compounded of only Pb andSb, can be quantitatively converted into a 3.101-g mixture of theoxides PbO2 and Sb2O4. What was the percentage (by mass) of antimony in the alloy?
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
calculate the concentrations of all species in a 0.690 m na2so3 sodium sulfite solution. the ionization constants for
calculate the number of water molecules that can be prepared from 664 h2 molecules and 664 o2
The concentration of SO42- (aq) in a sample of river water can be determined using a precipitation titration in which a salt of Ba+ (aq) is the standard solution and BaSO4 (s) is the precipitate formed. What is the concentration of SO42-
a 28.2 g sample of nickel metal is heated to 99.8 degrees celsiusand place in a coffee-cup calorimeter containing 150.0
if 1 amu 1.661 x 10-24 g what is the weighted average atomic mass of a boron atom in
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10-6m. Could the electron make a transition from the ground state to a higher energy level?
Write the abbreviated electron configuration for each of the following ions: a. Mn4+
Calcium carbonate CaCO3 reacts with stomach acid HCL according to the following equation: CaCO3 + HCl --- CaCl2 + H2O + CO2. Tums, antacid, contains CaCO3. If tums is added to 20.0 mL of 4.00M HCl, How many grams of CO2 gas are produced.
how many calories are required to raise the temperature of a 150 gram sample of gold from 25 degree celcius to 175
Choose one of the non-heme based oxygen transport proteins (i.e. not hemoglobin or myoglobin). Sketch the oxygen binding site environment, indicating the likely mode by which oxygen coordinates
What is the theoretical yield of aspirin in the reaction of 3.60 grams of salicylic acid with excess acetic anhydride?
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