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A 0.1329g 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 as well as the temperature increases by 1.126°C. Compute the heat given off by the burning Mg, in kJ/g and in kJ/mol.
considering this given equation as 2no o2 --gt 2no2 this is believed to occur by the mechanism 2no--gt n2o2
calculate the heat released when 1.95 l of cl2g with a density of 1.88 gl reacts with an excess of sodium metal at
calculate mass of KHC8H4O4 (molar mass = 204.44 g/mol) that reacts with 15 ml of the NaOH solution
If 0.230g of sodium metal reacts with 0.355g of chlorine gas, what is the mass of sodium chloride produced
The manometer shown below measures the pressure of the water in the tank. Using variables for the densities (no values given), find the gage pressure at point A.
A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100 g sample of this compound. The empirical formula of this compound is CH2O.
Explain why is that based on your understanding of the forces that maintain the native conformation of proteins.
If the ionization constant of water, Kw, at 40°C is 2.92 x 10-14, then what is the hydronium ion concentration and pH for an acidic solution
What weight of A would be removed by four successive extractions with 25ml portions of ligroin? How much ligroin would be required to remove 98.5% of A in a single extraction
Some HN3 would be used up in re-establishing equilibrium Some HNO2 would be formed in re-establishing equilibrium Some HNO2 would be formed, and some N2H4 would be lost More HN3 and H2O would be formed The temperature would decrease, and the forwa..
What is the band gap energy in kilojoules per mole if bule diamonds absorb orange light with a wavelength of 675nm
A cylinder with a piston contains 897 ml of dry oxygen at a pressure of 582 mm Hg and a temperature of 327 K. If the temperature is reduced to 286 K and the pressure increased to 628 mm Hg what is the new volume ?
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