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If 5.0L of nitrogen at 12 degrees Celsius and 1.30 atm pressure reacts with the same volume of hydrogen at the same temperature and pressure, what volume of ammonia is obtained at that temperature and pressure?
Sylvanite is a mineral that contains 28.0 gold by mass. How much sylvanite would you need to dig up to obtain 50.0 of gold
Using standard enthalpies of formation from Appendix 2A, calculate the standard reaction enthalpy for the following reaction, the final step in the production of nitric acid
How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 14.0 L of H2 gas if the pressure of H2 is 757 torr at 20.0°C
For 1 mol of an ideal gas, pext = p = 101 kPa (pressure remains constant). The temperature is changed from 100 degrees C to 25.0 degrees C. Calculate q, w, ΔU and ΔH. Assume CV,m = 3/2 R.
Calculate the [SCN-] solution A, where 5.7 mL of 2.910?3 M NaSCN is diluted to 44.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3
Calculate the pH of a solution prepared by mixing 50mL of a 0.10 M CH3NH2 solution with 25mL of a .20M HCl solution. (Kb CH3NH2 = 4.4 x 10^-4)
How many grams are present in 1 gram of potassium-40. Its natural abundance is 0.0117% and its half life is 1.28X10^9 yrs
The reaction of coal with water at high temperatures produces synthesis gas, which is a mixture of carbon monoxide and hydrogen. Use the bond energies in the table below to estimate the enthalpy of the reaction
Calculate the atomic mass of neon (Ne) which is composed of three naturally occurring isotopes with the following natural abundances and masses
The rate constant for the second order reaction 2NO2 ® N2O4 is 2.79 L/mol ·min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life? A) 20.5 s B) 10.3 s C) 0.341 min D) 176 s
compute the quantity of workw that is associated with a 9.5 litre expansion of a gasnbsp againstnbsp the givennbsp
a metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84
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