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Calculate the number of vacancies per cubic meter in some metal at 759°C. The energy for vacancy formation is 0.82 eV/atom, while the density and atomic weight for this metal are 6.94 g/cm3 and 93.07 g/mol, respectively.
isothermally against a constant external pressure of 2.85 atm from 3.12 L to 11.85 L. Calculate the values of q, w, delta H, delta S system, delta S surroundings, delta S universe and delta G.
How much heat (in kJ) is needed to convert 853 g of ice at -30.°C to steam at 131°C? (The specific heat capacities of ice, steam, and liquid are 2.03 J g-1 °C-1, 1.99 J g-1 °C-1, and 4.18 J g-1 °C-1, respectively. The heat of fusion is 6.02 kJ mol..
Draw stereochemical projections for the products of bromine addition to maleic acid and fumaric acid (cis and trans HOOCCH=CHCOOH, respectively) assuming that bromine adds to these compounds the same way it does to cinnamic acid.
A sample of air at 15 psi is compressed at constant temperature from 555ml to 275ml. Calculate the resulting pressure.
The freezing point of t-butanol is 25.50°C and Kf is 9.1°C · kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 10.2 g sample of t-butanol is 24.59°C, how many grams of water are present in the sample?
Determine the pH change when 0.112 mol KOH is added to 1.00 L of a buffer solution that is 0.394 M in CH3COOH and 0.246 M in CH3COO-. Determine the pH change when 0.095 mol HI is added to 1.00 L of a buffer solution that is 0.379 M in HClO and 0.3..
nitric oxide no is made from the oxidation of nh3 and the reactions is represented by the following equation4nh35o2
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
Calculate the change in internal energy for a system if a gas cools and releases 10.86 kJ of heat and expanded from 2.35 L to 22.86 L at 3.50 atm
An ionic compound contains only a metal, M, and bromine. If analysis indicates that a 3.61 g sample of the compound contains 2.44 g of M, what mass of Br in g is contained in 344 g of the mineral
Suppose the pH of the water is 4.59 and that the concentration of iron(II) in the water is 7.99x 10-5 M, what is the potential of the corrosion reaction under the above conditions at 298 K?
A ground-state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to return to the ground state.
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