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Problem- An aqueous solution containing 15.5g of an unknown molecular (nonelectrolyte) compound in 104.0g of water was found to have a freezing point of -2.0C
Calculate the molar mass of the unknown compound.
Please demonstrate the entire work. I am thanking you in advance
Calculate the concentration of the hidroxide ion in a solution where (H3O) is 0.32M. Asume the solution is at 25C and the Kw=1.0 x 10^-14.
What mass of H2C2O2 is required to prepare 250 mL of a 0.15 M H2C2O4 solution
Problem- An ideal gas expands into evacuated chambers, whose walls are thermally insulated and so, cannot exchange heat with the surroundings. For the gas, define as the system,
Electromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The energy of one photon of this light
Problem- A .2602 gram sample of an unknown monoprotic acid requires 12.23 ml of 0.1298 M NaOH to reach the end point. What is the molar mass of the acid
Sucrose (C12H22O11 FW=342.2965) combusts in oxygen to generate carbon dioxide and water vapor. When 20-g sample of it is combusted in a bomb calorimeter with a calorimeter constant of 6.595 kJ/ degrees Celsius
Titration of a 308.5 mg sample of synthesized aspirin with 0.100 M NaOH solution required 20.30 mL. What is the EMM(effective molar mass) of the sample, and what is the % ASA(acetylsalicylic acid)
Question- The value of Delta g for the conversion of 3-phosphoglycerate to 2-phosphoglycerate (2PG) is +4.4 kj/mol. If the concentration of 3-phosphoglycerate at equilibrium is 2.25 mM, what is the concentration of 2 phosphoglycerate. Assume a tem..
the vapor pressure of benzene is 100.0mmhg at 26.1 degrees celsius. calculate the vapor pressure of a solution
Explain and define how each of the following experimental errors or variations would affect your HETP value as well as the efficient of your separation.
A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater Lake (in Oregon) gave 7.0 disintegrations of carbon-14 nuclei per minute per gram of total carbon.
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
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