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The standard enthalpy of fusion of bromobenzene is 10.7 kJ/mol at its melting point, 242.4 K. What is the standard change in entropy for the melting of bromobenzene at its melting point?
given that, for H2C2O4(aq), Ka1 = 6.5 x 10-2 and Ka2 = 6.1 x 10-5. Don't forget that Kw = 1 x 10-14.
If the total pressure inside the container is 350 mm Hg , what is the partial pressure of each individual component?
The pI can be estimated fairly accurately within 0.1 or 0.2 pH units from the pK values of all the proton dissociable groups in the peptide. Utilizing pK values from the table at the right approximate the pI value of the following hexapeptide. Trp..
Sr reacts very vigorously in excess 1 M NH4HCO3 as a precipitate and H2 are formed among the products. For this system in a closed container, write the correct eqns for each 1/2 rxn and net redox rxn noting that incompatible products cannot be pro..
10 M solution of chloroacetic acid, ClCH2CO2H, has a pH of 1.95. calculate Ka for the acid.
when a current of 308 mA is used for 8h, what volume of fluorine gas at 298 K and 1 atm can be produced from a molten mixture of potassium and hydrogen fluoride
calculate how many moles of nh3 form when each quantity of reactant completely reacts.3n2h4 l 4nh3 g n2 g2.6 mole
If 45 mL of H2 (g) are collected over water at 27°C and 751 mmHg external pressure. How many grams of Al were reacted.
a study of the system4 qh3g 7 o2g 2 q2o4g 6 h2ogwas carried out. a system was prepared with qh3 o2 3.61 m as the
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to 3.7 1010 decay events per second (the number of decay events from 1 g of radium in 1 s).
The mass of a cube of iron is 284 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
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