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What is the mass of a metal in kg (density = 9.2 g ml^-1) piece of volume 77.0 cc? 1ml = 1cc
the number of vacancies present in some metal at 857degc is 1.7 x 1024 m-3. calculate the number of vacancies at
Calculate ?SO (universe) for the formation of 1.00 mol of HCl (g) from gaseous hydrogen and chlorine at 25 OC. Is the reaction spontaneous at that temperature
Benzene has a heat of vaporization of 30.72;{{rm{kJ}}}/{{rm{mol}}} and a normal boiling point of 80.1 ^circ {rm{C}}. At what temperature does benzene boil when the external pressure is 420 torr?
Calculate the percent yield of this organic reaction- C7H6O2------->C12H16O2. Molecular weight of C7H6O2 is 122.12 amount used 100g, Molecular weight of C12H16O2 192.25 amount recovered 125.9 g
At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg, respectively. calculate the mole fraction of benzene in the vapor pressure over a solution of benzene and toluene with xbenzene =0.600
the first order reaction a ---gt products has a half life of 46.2 minutes at 25c and 2.6 minutes at 102 c. calculate
A brewery has a horizontal conveyor belt to transfer malted barley from a storage silo to the mash tun (the large vessel where the malted barley is steeped in hot water)
Write a 3 page paper (including separate title and reference pages). The paper must be at least 1300 words. Identify the factors that could have caused or lead (Pathogenesis) to the particular disease or condition, the signs and symptoms, and other a..
For UV light of wavelength 254 nm, calculate the frequency and the amount of energy absorbed by a single molecule when it absorbs a quantum of this light. (Remember ??=c, where c = 3.00 x 108m/s and E = h?, where h = 6.63 x 10-34 J·s) 1nm = 1x10-9..
At a distance of 41 ft an ionizing radiation source delivers 4.5 rem of radiation. How close could you get to the source and still have no biological effects?
What is the density of gaseous propane (C3H8) under the same conditions?
1. we have a solution that is prepared when 525 grams of pbno32nbsp leadii nitrate dissolved in 1.250 liters ofnbsp
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