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If you were stranded on a desert island and wanted to perform a re-crystallization, what substance would best be used for a boiling chip and why: a pearl found in an oyster; a pebble from the beach; a piece of lava rock from a nearby volcano (assume all three items are of the same size)?
What statement below best describes the graph representing the integrated 1st order rate law plot of ln[a] vs t having a straight line negative slope equal to -k
The molality of sodium nitrate solution us 1.44m. What is mole fraction of NaNo3. The molar mass of NaNo3 is 85.06g/mol
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag^+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2^+ and the concentration of Ag^+(aq) i..
The concentration of hydrogen ions in a solution of 40.0 mM butanoic acid and 0.01 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO- to be 500 pm
Sulfur dioxide (SO2) is an unwelcome result of burning soft coal in power plants. Some of the SO2 ends up as sulfuric acid in acid precipitation.
Describe the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
aluminum may be formed by the passage of 60,714 C through an electrolytic cell that contains a molten aluminum salt.
a rigid plastic container holds 1.00 l methane gas at 630 torr pressure when the temperature is 20.3degc. how much more
You need to determine value of ?G° for CO(NH2)2(s) + H2O(l) CO2(g) + 2NH3(g)?
Calculate the standard heat of reaction, or for this reaction using the given data. Also consider that the standard enthalpy of the formation of elements in their pure form is considered to be zero.
A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Which is the correct formula.(a) 6CH20 (b) (CH2O)6 (c) C6H12O6 (d) C6(H2O)6
A certain substance has a heat of vaporization of 52.17 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.00 times higher than it was at 291 K
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