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Consider three different compounds of the hypothetical element X using the table of bond lenghts as a reference, rank the three compounds shown below in order of increasing x-x bond lenght.
X2H6 , X2H4, X2H2
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids
A chemist wants to make 6.5L of a 0.310M CaCl2 solution.What mass of CaCl2 (in g) should the chemist use?
Give the balanced total and net ionic equations and predict whether a reaction occurs. indicate whether the reactions are precipitation reactions or acid-base reactions.
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
A solution is made by mixing exactly 500 mL of 0.180 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentration of the species
what should the stock concentration of atp be so that if you pipette a 100 uL aliquot you will obtain a final concentration of 2mM in an assay volume of 3.0 mL
The specific heat of silver is 0.235 J/g·K. Its melting point is 962°C, and its heat of fusion is 11.3 kJ/mol. What quantity of heat, in joules, is required to change 7.50 g of silver from solid at 25°C to liquid at 962°C?
Using a solution prepared by adding 467 mL of 0.400 M silver nitrate with 421 mL of 0.503 M sodium phosphate then determines what is the silver ion concentration in? Ksp of silver phosphate = 2.8 × 10-18
A gaseous mixture of O2 and Kr has a density of 1.192 g/L at 305 torr and 300. K. What is the mole percent O2 in the mixture
Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
2C8H18(g) + 25O2(g) --> 16CO2(g) + 18H2O(g) 0.400 mol of octane is allowed to react with 0.600 mol of oxygen. Which is the limiting reactant?
Explain why when the thermodynamic reaction is added to water , the reaction is more vigorous than when the kinetic product is added to water.
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