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Question- 100.0mL of 0.00100M Na2CO3 and 100.0mL of 0.00200M MgCl2 are mixed. Will a precipitate form? Justify your choice mathematically.
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Calculate the enthalpy change associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 110.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, Hfus = 6.01 kJ/m..
A compound, C7H12O4, has an IR spectrum showing a peak at 1735 cm-1. Its 1H NMR spectrum has peaks at delta 1.3 (6 H, triplet), 3.4 (2 H, singlet), and 4.2 (4 H, quartet). Draw its structure
A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system.
prove the presence of the cations listed : Sn2+ , cd2+, Cu2+, Bi3+. write four paragraphs about these cations a paragraph each?
the enthalpy of fusion of methanol ch3oh is 3.16 kjmol. how much heat would be absorbed or released upon freezing 25.6
The delta Hvap of a certain compound is 15.39 kj*mol^-1 as well as its delta S vap is 58.08 J*mol-1*K-1. Explain what is the boiling point of this compound
A 25.00-mL sample of an unknown H3PO4 solution is titrated with a 0.100 M NaOH solution. The equivalence point is reached when 52.58 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction..
calculate the detection limit of this reaction for each halide, the value below which there will be no observed reaction.
which of the following quantum numbers describes the shape of an orbital? A)principal quantum number B)Schrodinger quantum number C) spin quantum number D) Angular momentum quantum number E)magnetic quantum number
helium has a density of 1.79 x 10-4 gml at standard temperature and pressure. a balloon has a volume of 6.3 liters.
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
Draw the molecule by placing atoms on the grid and connecting them with bonds
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