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Write the short-hand and long-hand electron configuration for each of the following ions. For each ion, identify another ion that is isoelectronic with it. a. Mg2+ b. O2- c. Ga3+
A 250 gram sample of water at the boiling point had 45.0 kJ of heat added. How many grams of water were vaporized? Heat of vaporization for water is 40.6 kJ/mole
If 3.8 kcal is released by combustion of each gram of glucose, how many kcal are released by the combustion of 1.5 mol of glucose
pure acetylsalicylic acid in water and titrated solution to equivalence point using 88.43 ml of .102 M NaOH (aq) Assuming that acetylsalicylic acid has only one ionizable hydrogen calculate molar mass of acid
Calculate the pressure exerted by 20 gram-moles of ammonia at 300 K in a 5-liter container, using : a. the ideal gas equation b. the SRK equation
A 130 mL stock solution contains 1.3 M Na3PO4. When 10 mL of the stock solution is diluted to 21 mL, what will the concentration of Na+ ions be?
calculate the solubility (in mol/liter) of Al(OH)3 in a solution
A rechargeable battery is constructed based on a concentration cell constructed of two half-cells. The volume of each half-cell is 2.1 and the concentrations of in the half-cells are 1.30 and 1.2×10?3.
The cytochrome b complexes of the mitochondrion and the chloroplast have similar organization and function. They each pass electrons from a reduced quinone to a peripheral membrane protein
the electron in a hydrogen atom is excited and makes a transition from n2 to n7. calculate the energy of the photon
a 14.0 g sample of iron was heated from 10.0C to 20.0C it absorbed 15.2 of energy as heat based on this data what is the specific heat of this piece of iron?
Why must we know both in order to explain the physical properties of the molecule. physical properties to be considered are solubility and the points when the molecule changes states
From there, how would I find the moles of salicylic acid in aspirin sample (mol) and the mass of salicylic acid in aspirin sample (g), which should help me calculate the percent purity of aspirin and the percent yield of aspirin in sample. Thank y..
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