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A microwave oven operating at 1.22 x 108 nm is utilized to heat 150 ml of water roughly the volume a tea cup from 20 C to 100 C. Compute the number of photons needed if 92% of microwave energy is converted to the thermal energy of water.
Calculate the mass of silver bromide that will produce 0.023 mol Na3[Ag(S2O3)2].Answer in units of g.
The reaction of alicylic acid with a catalytic amount of sulfuric acid and excess methanol is an example of a fischer esterification. Why was the reaction heated to reflux instead of leaving it at room temp?
What temperature would be observed during the entire distillation. B) If a thermometer were immersed below the surface of the liquid of the boiling flask, what temperature would be observed. C) What would be the composition of the distillation.
Explain why we take two consequent concurrent reading for calculation in titration. Explain is there any specific reason for that
Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, ofH?, at 25 oC for this compound. ofH? values at 25 oC for CO2(g) and H2O(l) are ?394 kJ mol?1 and ?286 kJ mol?1, respectively
Calculate the molarity of each of the following solutions. Part A - 0.14mol of LiNO3 in 6.0L of solution.
Calculate the pH when 8.14 g of NaClO is added to 445.5 mL of 0.50 M HClO. Ignore any changes in volume.
Determine the number of vacancies per cm3 in gold at 900?C, given a vacancy formation energy of 0.98 eV/atom and an Arrhenius pre-exponential factor of one
For the following reactants, predict the products formed (if any) and write the balanced molecular equation, complete ionic equation and net ionic equation. Ca(s)+ HCI(aq)
Compute the ratio of the masses of the buffer components (NH3/NH4Cl) necessary to make the buffer with a pH of 9
a power plant with a design capacity of 600 mw is operated with 36 thermal efficiency and operated at 70 of the design
a student collected the following date while using the procedure described in this module 27.13 ml of 0.01m edta
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