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A 0.1329 g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter contains exactly 251 g of water, and the temperature increases by 1.126°C. Compute the heat given off by the burning Mg, in kJ/g and in kJ/mol.
For each of the following pairs of substance, predict which member of the pair will have the higher melting point, and explain why. a) NaCl and Cl2 b) SiO2 and CO2 c) Cu and CO d) NaF and MgO e) Na2) and SiC f) HCl and HF g) Ar and NO
An ideal gas at 300 K has an initial pressure of 15 bar and is allowed to expand isothermally to a pressure of 1 bar. Calculate: the maximum work that can be obtained from the expansion
Explain how many tripeptide isomers that contain one glycine residue and two alanine residues are possible? State the abbreviated formulas for all of the possible isomers
Phosphorous-32 has a half life of 14.26 days. If a patient is initially given a dose ?of 1.55 g of Phosphorous-32, how much remains in the patient's body after 1 week. Assume none of the dose is excreted from the body
Tetradecane and hexadecane were separated in a capillary column, with retention times of 3.529 and 6.955 minutes and base widths (Wb) of 58s and 1.4 min, respectively. An un-retained air peak occurs at 30s. Calculate the column resolution and the ..
How many grams of CO will dissolve in 1.00L of water at a CO partial pressure of 2.75 atm?
If an equilibrium constant is much larger than one, it means? A. The position of equilibrium favors the formation products B. The position of equilibrium favors the formation of reactants C
When 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0% yield, what mass of calcium nitride forms?
what is the total number of joules absorbed by 65.0g of water when the temperature of the water is rasied from 25.0 c to 40,0 c?
A weak base B has a dissociation constant Kb = 1.0 X 10-7. For a 0.30 M solution of B in water,
What NaCl concentration results when 214mL of an .087M NaCl solution is mixed with 517mL of a .250M NaCl solution
Explain how to sketch a boiling point-composition figure for mixtures of toluene and water. With water mole percent of 20.2% as well as toluene mole percent 79.8% also a boiling point of 85* C.
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