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Compute the work that must be done against the atmosphere for the expansion of the gaseous products in the combustion of 1.00 mol C6H6 (l) at 25 degrees Celsius and 1.00 bar.
Calculate the temperature increase of the bullet. ° C (b) After a short time the bullet and the block come to the same temperature T. Calculate T, assuming no heat is lost to the environment. ° C
If there's a mixture of O2 and N2, and the mol of N2 is 0.605 mol, and fraction (f) of O2 is 0.251; then, what is the mol of O2?
What is the technique for securing a piece of filter paper into a Buchner funnel for vaccum filtration? c) The alum crystals are washed of contaminants with an alcohol-water mixture rather than with deionized water. Explain.
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
If 62.0 g of NH3 and 35.0 g of oxygen gas react, which is the limiting reagent. How much NO2 is produced
A tertiary alkyl halide reacts with a weak base and nucleophile. The reaction will proceed via which of the following mechanisms? A) SN1 B) SN2 C) E1 D) E2 E) SN1 and E1
the half-life for the first order conversion of cyclobutane to ethylenec4h8g -gt 2c2h4gis 22.7 s at a particular
what is the simplest formula for chalcocite if a sample of this ore contains 8.274 g copper and 2.088 g
Brass has a density of 8.40 g/cm3 and a specific heat of 0.385 J g-1 oC-1. A 11.2 cm3 piece of brass at an initial temperature of 154oC is dropped into an insulated container with 138.4 grams of water initially at 24.1oC. What will be the final te..
0.00334 moles (total) of NaOH were added to an aspirin solution. 0.000884 moles of HCl were required to back titrate the excess NaOH to a colorless endpoint. Explain how many moles of aspirin are in the sample
An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024 g/mL. Explain what are the molality, mole fraction, and molarity of NH4Cl in the solution
Describe a spectrum absorbance vs. frequency corresponding to the transitions you have shown in part a. Indicate which transitions in the energy level diagram correspond to which peaks in the spectrum.
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