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A Ni(II) coordination compound with an octahedral arrangement of ligands has been synthesized containing only water and ammonia as ligands and chloride as counterions. From the following data, determine the exact formula of this compound. When 4.37x10^-4 moles of this complex is dissolved into 425.0 mL of water, you find that 17.49 mL of 0.1000 M HCl is needed to reach a titration endpoint. Make sure that your final formula contains the necessary counterions to make a neutral salt.
If 50 g of KNO3 is completely dissolved in 100 g of water at 70 degrees Celcius, is the solution saturated, unsaturated, or supersaturated?
Determine the molar concentration of silver nitrate(AgNO3) in a solution if titration of twenty five mili litres of the solution with 0.300M sodium chloride (NaCl) needs 37.05ml of the sodium chloride solution to reach the end point?
a sample of the sugar d-ribose c5h10o5 of mass 0.727 g was placed in a calorimeter and then ignited in the presence of
Calculate the molar concentration of CO2 for a sample that has a pH of 6.220 and a HCO -3 concentration of 0.0020 M. For carbonic acid pKa1=6.33 and pKa2=10.35.
Phosphate can buffer in three pH ranges. Give the chemical formulas of the buffer pairs and give the range in which each buffers. Start with H3PO4/ H2PO4-1
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
Determine which H atom transition (ninitial,nfinal) was responsible for the emission of a photon with a frequency of 6.91 x 1014 Hz.
Water boils at a much higher temperature than all other molecules of similar molecular weight because: it makes very strong hydrogen bonds
the half life increased from 2.0 min to 4.0 min at 25C. Calculate the the order of the reaction and the rate constant.
Atomic orbitals of carbon relative to methane in a cubic frame of reference.
What are the effects of temperature, molarity, surface area, nature of the reactants, and the presence of a catalyst on the reaction rate of Zn(s)+2HCl(aq)-> ZnCl2(aq)+ H2(g)
The pH of an aqueous solution containing only a monoprotic weak acid has a pH of 4.1. What is the concentration of hydronium ion, H3O+, in the solution? (a)2 x 10?3 M (b)2 x 10?4 M (c)8 x 10?4 M (d)8 x 10?5 M (e)0.61 M
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