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A solid mixture weighing 0.5485g contained merely ferrous ammonium sulfate hexahydrate as well as ferrous chloride hexahydrate. The sample was dissolved in 1 M H2SO4 oxidized to Fe3+ with H2O2 as well as precipitated with cupferron. The ferric cupferron complex was ignited to produce 0.1678g of ferric oxide, Fe2O3 (FM159.69). Compute the weight percent of Cl in the original sample. Ferrous ammonium sulfate heahydrate 392.13 g/mol, ferrous chloride hexahydrate 234.84 g/mol, and cupferron (155.16 g/mol).
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
a gas-filled balloon having a volume of 6.00 l at 1.2 atm and 25degc is allowed to rise to the stratosphere about 30 km
two evacuated bulbs of equal volume are connected by a tube of negligible volume. one bulb is placed in a 200 k
Determine the concentration of calcium and chloride in the solution in both mg/L and mmol/L. You will need to find the molecular weights on a periodic table.
In one experiment, 11.5 g of NO formed when 112.4 g of each reactant was used. What is the highest percent yield of N2 that can be expected?
Steam is condensed at 100 °C and the water is cooled to 0 °C and frozen to ice. What is the molar entropy change of the water
1. which of the alkyl chlorides listed below undergoes dehydrohalogenation elimination in the presence of strong base
A balloon has a volume of 10,500 liters, and the temperature is 15C. If the temperature were -25C, what would the volume of the balloon be.
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. What is the pH of this buffer?
Compute the number of electrons in a flake of pure gold valued at $0.22. Assume that the price of gold is $1487.0/troy oz. (1 troy oz = 31.1 g)
magnesium metal reacts quantitatively with oxygen to give magnesium oxide mgo. if 5.00 g of mg and 5.00 g of o2 are
1. given this ksp for leadii chloride find the molar solubility of this salt in a 0.05m of cacl2 solution.2. will caoh2
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