Describe why a molecule may have a polar end
Describe why a molecule may have a polar end and a non-polar end. Is it because the level of covalence is different among certain bonds?
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The vapor pressure of ethanol is 800Torr at 80oC. At the same temperature the vapor pressure of water is 370 Torr. A sample which is having the 100 g water at 80oCis mixed with ethanol at the same temperature.
Determine y-intercept of line containing points(6,-1) and (-8,0). Write the answer correct to three decimal places. Determine slope of line having the points (6,4)and (-7,8).
Estimate the number of steps it would take you by using a single dimensional equation, walking at your normal stride, to walk from the Earth to Alpha Centauri, a distance of 4.3 light years and the speed of light is 1.86X10^5 miles/s.
The bond between hemoglobin and CO absorbs radiation of1953cm^-1. (the units are recipricol of the wavelength in cm)Calculate the wavelength in nm and A. And find frequency inHz.
Determine the numbers of grams of the nonvolatile solute glycerol, C3H5 (OH)3, must be added to 113 g of methanol to obtain a solution with a vapor pressure of 139 torr when the vapor pressure of pure methanol, CH3OH, at 30°C is 160 tor
A mixture of H2O and CH4 is passed over a nickel catalyst at the1000 K. The emerging gas is collected in a 5.00L flask and is found to contain 2.60 g of H2, 8.62 g of CO, 43.0 g of CH4, and 48.4 g of H2O. How can calculate Kc and Kp f
A aliquot which is having 2.50-ml of a solution that contains 7.9 ppm iron(III) is treated with an appropriate excess of KSCN to produce the Fe(SCN) 2+ complex and diluted to the 50.0 ml.
At the 5% significance level, do data give sufficient evidence to conclude that at this specific company the mean salary of female employees is less than the mean salary of male employees? Employ the critical-value approach
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