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Explain a layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 21.4% of that discovered in living organisms. Explain how long ago in yr was this ice age?
How much dopant is present in 175kg of semiconductor with a dopant concentration of 4.00ppm by mass
What is the specific heat of a substance that it takes 192 Joules to raise the temperature of 45 grams by 6 degrees Celsius
greg nard added an equivalent of 34-epoxy-4-methylcyclohexanol to an ether solution of methyl magnesium bromide and
Calculate the minimum wavelength of light (in nm) that could break an oxygen-oxygen double bond given that it takes 499 kJ to break on mole of these bonds.
question cyclopropane is converted to propene in a first-order process. the rate constant is 5.4 x 10-2 hr -1. if the
formaldehyde h2c o is known to all biologists because of its usefulness as a tissue preservative. when pure
Determine the total number of moles of solid sodium hydroxide required to react with 844.00mL of 0.8700M phosphoric acid (H3PO4)
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
Calculate the pH of an HCl solution if 16.5 mL of this HCl solution is titrated with a 0.454 M NaOH and it took 5.65 mL of the NaOH to reach the equivalnce point.
for the reaction 2 no2 g --gt n2 g 2 o2 g3.60 bar of no2 g is initially placed in a 1.00 l container. at equilibrium
the coinage metals -- copper silver and gold -- crystallize in a cubic closest packed structure. use the density of
Explain how to draw NMR structures for compounds that meet these descriptions: a. C2H60; one singlet b. C3H7Cl; one doublet and one septet c. C4H8Cl20; two triplets d. C4H8O2; one singlet, one triplet, and one quartet Any help would be greatly app..
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