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While 22.63 g of iron is reacted with fluorine 45.69 g of an iron fluoride product is formed. Explain what is the percent iron in the product produced?
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
explain how to correct for the partial pressure of water vapor when calculating the partial pressure of a dry gas that is collected over water.
consider the reaction ag bb lt-gt cgfor which k130. assume that .406 mol of cg is placed in a cylinder that has a
A:how many valance electrons does calcium fluorine have. B: what is its empirical formula. c: what is its lewis structure
If the density of air at an ordinary atmospheric pressure and 25 degrees Celsius is 1.19g/L. what is the mass, in kilograms, of the air in the room that measures 12.5x15.5x8.0ft
2nd derivative (forwards) Gradient-vector, Hessian-vector products Forward-reverse mode Hessian How costly is obtaining Hessian information?
how much energy would be required to raise the temperature of 75.0 g of water from 25 c to 75 c
Describe the detailed structure of DNA and explain the manner in which this structure replicates itself in both prokaryotes and eukaryotes
If the yield of this reaction is 82% and aluminum ore is 71% by mass aluminum oxide, what mass of aluminum ore must be mined in order to produce 1.0 × 103 kg (1 metric ton) of aluminum metal by the Hall process
In a cup calorimeter experiment, a student found that 10.9 kJ of energy was consumed by the vaporization of a 56.0 g sample of N2. Use the student's experimental data to calculate a value for ΔHvap for N2.
What is the percent ionization of cyanic acid (Ka = 2.0 x 10^-4) in a buffer of 0.50 M HCNO and 0.10 M NaCNO?
A 0.16-mole sample of nitrogen gas occupies a volume of 2.35L . What is the volume of 0.34mol of nitrogen gas under the same conditions
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