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what is the standard reaction enthalpy for which the equilibrium constant is doubled when the temperature is increased by 10 C at 298 K?
Two hypothetical ionic compounds are discovered with the chemical formulas XCl2 and YCl2, where X and Y represent symbols of the imaginary elements. Chemical analysis of the two compounds reveals that 0.25 mol XCl2 has a mass of 100.0 g and 0.50 m..
How many valence electrons are there in a Cr atom, Which of the following 1M solutions will have the highest concentration of ions
A solution to replace potassium loss contains 40.mEq/L each of K+ and Cl-. How many moles each of K+ and Cl- are in 1.5L solution
A) The transfer of electrons from one atom to another produces charges which then interact with each other. B) Bonding occurs through sharing pairs of electrons with adjacent atoms.
calculate the molarity of a solution made by dissolving 0.850 grams of na2so4 in enough water to form exactly 930 ml of
A turbine operates by the impact of a high velocity jet of steam against the turbine blades. The steam leaves the turbine at a lower velovity.
For the decomposition of ammonia on a tungsten surface at 1100 oC 2 NH3 N2 + 3 H2 the average rate of disappearance of NH3 over the time period from t = 0 s to t = 1417 s is found to be 3.40E-6 M s-1. The average rate of formation of N2 over the s..
Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased
The adjusted retention times were 10.4 min for hexane, 12.3 min for heptane, and 11.6 min for the unknown. Calculate the retention index for the unknown.
How many liters of O2 (g) are needed to react completely with 56.0 L of CH4 (g) at STP to produce CO2 (g) and H2O (g)? Given CH4 + 2O2---->CO2 + H2O
Calculate the molar mass of the unknown. Assume that the molal freezing point depression constant of water is 1.86°C•kg/mol and that the freezing point of water is 0.00°C. Please show all calculations in solving the problem
The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder. On ignition, the reaction that takes place is 6 NH4ClO4(s) + 10 Al(s) ? 5 Al2O3(s) + 3 N2(g) + 6 HCl(g) + 9 H2O(g)
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