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If 19.2 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction?
When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.083 kJ·K-1, the temperature decreases by 0.460 K.
Determine ΔG for this reaction When A is full into a cylinder at a pressure of 9.89 atm and the system is permitted to come to equilibrium, the final pressure was 15.94 atm.? Express your answer in units of kJ/mol
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. Write and equation that shows how this buffer neutralizes added bases.
At a given temperature, the equilibrium constant K for the reaction 2SO2(g) + O2(g) 2SO3(g) is 3.0 × 109. If 2.80 mol of SO2 and 4.06 mol of O2 are placed in a 1.78-L container.
Write the electron configuration of selenium. List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.
A first-stage recovery of magnesium from seawater is precipitation of Mg(OH)2 with CaO: Mg2+(aq)+CaO(s)+H2O(l)---->Mg(OH)2(s)+Ca2+(aq).
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
By Solving this problem student understand about isotopic abundance and how to calculate atomic weight (average atomic mass) of an element -
Using the Boltzmann distribution given below, determine Jmax (quantum number of the most intensely populated rotational state) as a function of temperature. Then find Jmax for CN+ at 298 K and 1100 K.
A voltaic cell is set up at 25º C with thefollowing half cells: Al3+ (0.0010 M) | Al and Ni2+(0.50 M) | Ni. Write an equation for the reaction that occurs when the cellgenerates an electric current and determinethe cell potential.
At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.
If 3.0 Ml of distilled water is added to 2.0 ml of 0.35M CoCl2 solution, what is the concentration of the resulting solution.
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