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The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mass of lindane is 290.8 g/mol. How many atoms of carbon does a molecule of lindane contain?
Indicate the number of unpaired electrons for following: [noble gas]ns^2(n-2)f^6 ? Please include the rationale?
explain the probable effect of this procedural change on the experimental results?
A total charge of 96.5 kC is passed through an elctrolytic cell. What mass of silver metal will be produced from a silver nitrate solution?
Oxalic acid, H2C2O4 has acid dissociation constants Ka1=5.9x10^-2 and Ka2=6.4x10^-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2C2O4
If acetic acid has a pure vapor pressure of 20 torr at 30 degrees C and acetaldehye has a pure vapor pressure of 1000 torr at 30 degrees C, a mixture of 12 moles of acetic acid
compound a has a solubility of 18 grams per 100. grams of water at25 degrees c. cooling a saturated 200.-gram solution
if 8.40 grams of C are burned, how much heat will be released for the following balanced reaction: C + O2 -> CO2 + heat (393 KJ)
the miners trapped in the san jose copper mine in chile are 700 meters below ground. calculate the work needed to raise
a calculate pcunbspfor the titration of 10.00 ml of 0.05000 m of i-nbspwith 0.02500 m cunbspstandard solution when
A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi. The elastic moduli of the concrete and steel are, respectively,
A zero-order reaction has a constant rate of 2.00×10-4 . If after 50.0 seconds the concentration has dropped to 6.00×10-2 , what was the initial concentration?
the standard enthalpy ofvaporization for c2br2f4 is 104.64 jg at its normal boiling pointof 47.26degc. calculate the
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