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What is the name of the value that can be calculated that expresses with a number how precise and how accurate each group is?
The assay for Xase has just been worked out, and you have a preparation of cells rich in this enzyme. Given the required equipment and supplies, how would you proceed
make a model of propane. if you substitute one bromine atom for one hydrogen atom how many isomers are possible? show
A 45.0 g block of aluminum initially at 28.0C absorbs 548 J of heat. What is the final temperature of the aluminum?
Calculate the temperature of boiling water at an elevation of 6000ft (2000m) given that the atmospheric pressure is 0.8atm. Assume delta H_vap is independent of T.
The solubility of barium fluoride, BaF2, is 3.15 x 10-3M at 25 °C. Calculate the solubility product, Ksp, of both compounds.
an optically pure compound was diluted to 400.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -2.87° at 25 °C. Calculate the specific rotation of the compound.
it was found that 19.31 ml of an hcl solution are needed to react completely with 322 ml of a lioh solution that has a
Calculate ?G° for the reaction of ammonia with fluorine. 2NH3(g) + 5F2(g) ? N2F4(g) + 6HF(g) Substance: NH3(g) F2(g) N2F4(g) HF(g) ?G° f (kJ/mol): -16.4 0 79.9 -275.4 179.1 kJ -179.1 kJ 1539.7 kJ -1539.7 kJ None of these choices is correct.
A 100.0 g piece of metal at an initial temperature of 105C is dropped into 100.0 g of cold water, initially at 21C. Energy transfer occurs but no chemical reaction. Only one of the following can possibly be correct for the final temperature of the..
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of XeF2
If we assume that simple Fermi-level statistics apply, what is the concentration of donors required? Furthermore, after adding the donor impurity, what is the total number of ionized impurities if the above sample is perfect compensation?
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.650 M, [B] = 1.35 M, and [C] = 0.300 M. The following reaction occurs and equilibrium is established: A+2B C
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