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Manganese metal is produced from the manganese(III) oxide, Mn2O3, which is found in manganite, a manganese ore. The manganese is reduced from its +3 oxidation state in Mn2O3 to the zero oxidation state of the uncharged metal by reacting the Mn2O3 with a reducing agent such as aluminum or carbon. How many pounds of manganese are in 1.261 tons of Mn2O3? (1 ton = 2000 pounds)
About 40 different substances called organophosphorus compounds are registered in the United States as insecticides. They are considered less damaging to the environment than some other insecticides because they breakdown relatively rapidly in the environment. The first of these organophosphorus insecticides to be produced was tetraethyl pyrophosphate, TEPP, which is 33.11% carbon, 6.95% hydrogen, 38.59% oxygen, and 21.35% phosphorus. It has a molecular mass of 290.190. What is the molecular formula for TEPP?
Which element is the central atom, explain how many bonds does the central atom form, is it polar or non-polar, define what the direction of negativity is
how many ml of water at 23degrees celsius with a density of 1.00gml must be mixed with 180mlabout 6oz of coffee at 95
The pH of a sample of rain is found to be 3.2. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 is 1.2E-2.
For a steel bar deformation begins at 400MPa, it has a modulus of elasticity of 207GPa. a) What is the maximum load that can be applied to a cylindrical specimen 10mm diameter and 60mm long without plastic deformation? b) What is the maximum length ..
the compound as2i4 is synthesized by reaction of arsenic metal with arsenic triiodide. if a solid cubic block of
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
Several significant signals have been identified on the spectrum. Assign these signals to corresponding functional groups in the molecule of aspirin
Determine how do you find out the new freezing point of a solution if given the formula is Delta T = m x kf x i but how do you find it how does it work?
In the study of biochemical processes, a common buffering agent is the weak base trishydroxymethylaminomethane, (HOCH2)3CNH2, often abbreviated as Tris. At 25 °C, Tris has a pKb of 5.91.
what is the ph of a solution created by mixing 368.0 ml of 0.175 m hydrochloric acid hcl with 231.0 ml of 0.318 m
The peregrine falcon has been measured as traveling up to 350 in a dive. If this falcon could fly to the Moon at this speed, how many seconds would it take
Describe any important differences between benzopinacol and benzopinacolone in the IR, H NMR spectra.
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