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Explain why wet hair placed in curlers that is allowed to dry tends to retain the shape of the curl.
replacement compounds for the Freons have gone into production: HFC-134a (chemical formula: CH 2 FCF 3 ) and HCFC-124 (formula:CHClFCF 3 ) In 1991. Determine the molar masses of these two compounds
a calorimeter contains 27.0 grams of h2o at the temperature of 14.5 degree celsius. when 1.40 grams of a substance that
The solvent used in the preparation of diphenylacetylene (2) is triethylene glycol. A) Write the structure of triethylene glycol; circle and label each of the functional groups in this molecule. B) What structural features account for the high boi..
if the syinge colume had been incorrectly read, giving a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R?
A certain substance has a heat of vaporization of 37.43 kJ/mol. At what Kelvin temperature will the vapor pressure be 7.00 times higher than
What is the average current passing through a solution of NiSO4 if 1.25 g of Ni were deposited in 4.07 hours? i = A
A particular element, M has a heat capacity of 0.36 j x g-1 x k-1. It forms an oxide that contains 2.90 g of M per gram of oxygen. What is the molar masss of M
At a given temperature, 1.18 atm of F2 and 5.91 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrF is found to be 1.044 atm. Calculate Kp for the reaction at this temperature. F2(g) + Br2(g) 2 BrF(g)
Calculate the molarity of a solution made by dissolving 0.850 grams of Na2SO4 in enough water to form exactly 930 mL of solution.
We find coesite and stishovite in shocked Coconino Sandstone at meteor Crater. We infer that coesite and stishovite formed from the transformation of quartz at high pressure and temperature.
the mass of an electron is 9.11times 10-31rm kg. if the de broglie wavelength for an electron in a hydrogen atom is
A mixture of CS2 (g) and excess O2 (g) is placed in a 10.0 L reaction vessel at 100.0 degrees C and the pressure of 3.00 atm, A spark causes the CS2 to ignite, burning it completely, according to the equation:
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