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Consider the chemical bonds found in the white solid, potassium hydrogen phosphate, K2HPO4. For each bond specified, choose the best description from the list of types below.
A. Ionic bond
B. Hydrogen bond
C. Single covalent bond
D. Double covalent bond
E. Resonance covalent bond ; bond order between 1 and 2
1. Phosphorus/Oxygen Bond
2. Potassium/Hydrogen phosphate Bond
3. Oxygen/Hydrogen Bond
The standard free energy of activation of a reaction A is 76.8 kJ mol%u20131 (18.4 kcal mol%u20131) at 298 K.
A 347 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present.
Consider a solution formed by mixing 48.0 mL of 0.100 M H2SO4, 36.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 2 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
it is sometimes doped to form an n-type semiconductor. Explain the difference between an intrinsic and an n-type semiconductor. Suggest an element that might be added to germanium to create the n-type semiconductor.
Calculate the pH of a solution prepared by mixing 10.0 mL of 0.500 M NaOH and 20.0 mL of 1.50 M benzoic acid solution. (Benzoic acid is monoprotic: it's ionization constant is 6.7 x 10-5)
A student prepared the Ni^2+ standar solution and obtained the following buret readings for solution #2, Calculate the concentration of Ni^2+ in the resulting solution.
First Ionization Energies across a period, e.g., period 2. explain in detail why there are anomalies for Boron and Oxygen. Explain the subshell hybridization of elements such as copper or chromium
The density of aluminum is 2.70 g/cm3 and the density of chromium is 7.19 g/cm'.If equal masses of aluminum and chromium are transferred to equal volumes of water in separate graduated cylinders.
what mass of PbSO4, is produced when 25.0 Ml of 0.2338M Pb(NO3)2 solution is added to 25.0 mL of 0.0971M Al2(SO4)3 solution,
The steel bomb of bomb calorimeter, which has a volume of 75 mL, is chaged with oxyen to a pressure of 145 atm at 22 C. Calculate the moles of oxygen in the bomb. Calculate the grams of oxygen in the bomb.
Suppose that a sample of gas occupies 162 mL of volume at 25C and a pressure of 291 torr. What would be the volume if the pressure were changed to 503 torr at 25C? Answer in units of mL.
Balance the following redox reaction in acidic solution. State what is being ocidized, what is being reduced and how many electrons are transferred during the reaction.
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