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While a 1.150 g sample of iron ore is treated with 50.0 ml of HCL the iron dissolves in the acid to form a solution of FeCl3. The FeCl3 solution is diluted to 100.0 ml and the concentration of Fe^3+ ions is determined by spectrometry to be0.095 mol*L^-1. Explain Mass % of iron in the ore?
03 mol sample of NH4NO3 is placed in a 1L evacuated flask, which is then sealed and heated. The NH4NO3 decomposes completely accodring to the balanced equation: NH4NO3-->N20+2H20 The total pressure in the flask measured at 400K is closest to which ..
Depict the skeletal structure of the organic species containing the carbonyl functionality required to form 3-ethyl-1-pentanol upon metal-catalyzed hydrogenation.
a box contains 126000 red marbles and 885000 yelllow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
Explain what the theorectical yield of aluminum oxide is if 2.80 mol of aluminum metal is exposed to 2.40 mol of oxygen
Calculate the fraction of methyl isonitrile molecules that have an energy of 160.0 kJ or greater at 510k and 514 k. What is the ratio of the fraction at 514 k to that at 510 k.
A. what mass of solid FeCl3 is required to prepare 250.0 ml of 0.245 M FeCl3 solution. B. How would you prepare 500.0 mL of 0.0500 M FeCl3 solution starting from the above solution in part A
5.97 g of CuNo3 is dissolved in water to make a 0.860 M solution. What is the volume of the solution
Describe what will be observed when a mixture of composition x_b=0.8 is heated, at each stage giving the number, composition, and relative amounts of the phases present.
Predict whether a reaction will occur in aqueous solution between the following pairs of substances. If a reaction does occur derive the net ionic equation. Specify the driving force : Precipitate formation (P) Water formation (W)
In what type of material is the energy gap between the valence and the conduction band the greatest? Na, Ge or diamond. Draw a rough energy band showing the valence
How many products are formed in this reaction? Which of the products are triatomic molecules? How many of the substances involved in this reaction are compounds?
the NaOH solution is required to reach the endpoint in the titration of a 7.248 sample of vinegar. What is the mass percent of acetic acid in this vinegar sample?
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