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Draw the atomic orbital diagram for the valence electron in Selenium (S) and then indicate the quantum numbers? (Please show all work and the steps proven methodically)
If 57.0 of solution is needed to precipitate all the sulfate ion in a 756 sample of , what is the molarity of the solution?
How much heat is required to raise the temperature of 7.50 grams of water from 10 degrees celcius to 55 degrees celcius
Given the reaction: 2Al + 3H2SO4 -> 3H2 + Al2(SO4)3 what would be the total number of moles of H2SO4 needed to react completely with 5.0 moles of Al ?
If 3.25ml of vinegar needs 40.0 of 0.130M NaOh to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.30qt sample of this vinegar.
The molality of the solution is determined to be .0480m. What is the molar mass of the substance?
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 308 torr at 25 oC? (At 25 oC the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torr.)
An infant ibuprofen suspension contains 100 mg/5.0 mL suspension. The recommended dose is 10mg/kg of body weight.
Determine the room temperature heat capacities at constant pressure for the following materials: aluminum, silver, tungston and 70Cu-30Zn brass
a sample of 1.518g of KHC8H4O4 was dissolved in water and titrated with an NaOH solution. 26.90 ml were required to reach the equivalence point. Calculate the molarity of the NaOH solution
Calculate ΔH° for the reaction -> 2 K(s) + 2 H2O(l) 2 KOH(aq) + H2(g) A 4.85-g chunk of potassium is dropped into 1.06 kg water at 24.0°C.
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 M NaOH. Ksp = 3.0 × 10-16 for Zn(OH)2, Kf = 3.0 × 1015 for Zn(OH)42-
How much heat energy, in kilojoules, is required to convert 73.0 g of ice at -18.0 0C to water at 25.0 0C ?
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