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Choose the element with more negative (more exothermic) electron affinity from each of the following pairs.
A. Mg or S
B. K or Cs
C. C or As
D. In or I
Calculate the amount of heat required to completely sublime 51.0 g of solid dry ice (CO_2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol .
If the concentration of CO in the equilibrium mixture is 0.2 M, what mass of methanol was initially introduced into the vessel?
How many moles of each ion are in each solution? (a) 2 mol of potassium perchlorate dissolved in water K+ mol ClO4- mol (b) 255 g of magnesium acetate dissolved in water Mg2+ mol C2H3O2- mol
Write the balanced equation for the neutralization reaction between HCl and Ba(OH)2 in aqueous solution
The liquid is allowed to stand in contact with the solid until equilibrium is achieved and then the liquid is poured off. What is the mass of solid remaining?
Calculate the concentration of ions in the following saturated solutions. (a) [I -] in AgI solution with [Ag+] = 9.6 multiplied by 10-9 M
Explain why and calculate the difference between the delta S° values at 298 K for the complete dissociation of the two complex ions. (Hint: the value delta H is about the same for both systems.)
What is the rate of consumption of O2 in a combustion reaction carried out in a 11.00 L flask if 6.30 mmol of oxygen is consumed in 25.6 s?
Determine the point group of each of the three possible geometries of the hypothetical Be3+ on, ten draw the molecular orbitals for each geometry,
At 1500 degrees C the equilibrium constant for the reaction CO(g)+2H2(g) -->
When calcium carbonate is added to the solution of organic acids, the following compounds form: calcium methanoate salt from the methanoic acid; calcium ethanoate from the ethanoic acid; and calcium phenoxide salt from the phenol.
Thiobacillus thiooxidans plays an important role in the sulfur cycle in nature. The organism oxidizes inorganic sulfur compounds, and in the process, obtains energy for the synthesis of ATP. The oxidation of sulfite to sulfate:
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