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The vapor pressure of water at 25deg C is 23.8 torr. Determine the mass of glucose (MolarMass=180g/mol) needed to add 500g of water to change the vapor pressure to 23.3 torr. Answer is 107 grams, although please explain how to arrive to this answer.
Advantages and disadvantages of using Alternative Fuel and Would you consider buying one of these in the future? Why or Why Not and Why do you think there are not more of these vehicles in use?
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2 - 0.490M NaC2H3O2 ? For MnS, Kspa=3x10^7
the periodic table when given a set of molecules, how can you decide which is most polar and has the most ionic character?
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively
whats the lewis dot structure for h2cch2? based on the structure predict the h-to-c-to-h bond angle. explain the reason
How would the Rf values change if you used pure dichloromethane ( no methanol ) as the mobile phase for the TLC separation of curcumin
At a certain temperature and pressure 2.8 L of N2 reacts with 4.2 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced
Zn(s) + 2AgNO3(aq) --> 2Ag(s) + Zn(NO3)2(aq) When 216 g of silver was produced, determine the mole(s) of silver nitrate would be required.
Acetylene gas (C2H2) burns with oxygen in an oxyacetylene torch to produce carbon dioxide, water vapor, and the great heat needed for welding metals. The heat of combustion of acetylene is 1259 kJ/mol.
Calculate the volume of an object that has a density of 0.817 g/ml and a mass of 12.7 grams. answer to 3 significant figures
A solution is prepared by mixing 80.0 mL of alcohol with enough water to give 200.0 mL solution. Calculate the % v/v concentration of alcohol in the solution.
calculate the partial pressure in atmospheres of each gas assuming that the total pressure of the gases is 1.34atmrm
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