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Problem- SrS has a face-centered cubic unit cell in which the S^2- anions occupy corners and face centers, while the cations fit into the hole between adjacent anions. What is the radius of Sr^2+ if the ionic radius of S^2- is 184.0 pm and density of SrS is 3.700 g/cm^3?
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The heat from an acetylene torch is produced by burning acetylene (C2H2) in oxygen. 2C2H2(g) + 5O2(g) ------------> 4CO2(g) + 2H2O(g) How many grams of water can be produced by the reaction of 2.40 mol C2H2 with 7.40 mol O2?
Depict the structure of the organic product expected when BrCH2CH2CH2CH2CH(CH3)OH is treated with base. Do not regard as stereochemistry.
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
There are 3 different possible structures (known as isomers) for a dibromoethene molecule, C2H2Br2. One of them has no net dipole moment, but the other two do. Draw a structure for each isomer. Include H atoms.
Under certain conditions, the formation of ammonia from nitrogen and hydrogen has an 8.12% yield. Under such conditions, how many grams of NH3 will be actually produced.
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
determine number of moles of oxygen molecules are in the cylinder if the volume of the cylinder is 5500 ml and the
Calculate the amount of heat needed to melt 2.00 kg of iron at its melting point (1,809 K), given that ΔHfus = 13.80 kJ/mol.
A sample of a liquid hydrocarbon know to consist of molecules with five carbon atoms is vaporized in a .204 L flask by immersion in a water bath at 101?. The barometric pressure is 767 torr, and the remaining gas weighs .482 g. What is the molecul..
The initial concentration of P is 0 M. What are the equilibrium concentrations of M - N and P
Write the standard line notation for each cell below. Assume all concentrations are 1.0 M and all partial pressures are 1.0 atm. IO3-(aq) + Fe2+(aq) --> Fe3+(aq) + I2(aq)
Which of the following is not involved in signal transduction by the b -adrenergic receptor pathway. Which of the following is not involved in signal transduction by the b -adrenergic receptor pathway
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