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You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24C. Calculate the percent by mass of sugar in the original mixture.
the bottom of a box has a surface area of 25.0 cm2. the mass of the box is 34.0 kilograms. acceleration due to gravity
Calculate the change of entropy for the system when 2.00 moles of a diatomic ideal gas is changed from 25 degrees celsius and 1.5 atm to 135 degrees Celsius
An unknown consisting of a single sugar gives a negative fermentation test. Which one of the following tests would allow you to decide which of the five sugars used in this experiment you had?
calculate the mass of propylene glycol c3h8o2 that must be added to 637 g of water to reduce the vapor pressure by 4.74
The plant manager would like to dump the wastewater into a nearby river. The local water quality control regulatory agency will allow at most discharge of 30,000 lb/h at a maximum salt content of 0.5%. Draw a flow diagram. Complete a DOF analysis ..
Calculate Ka and Original Concentration of Weak Base, You have a solution of a weak base, the pH of which is 10.7532. If 10.000 mL of this solution will neutralize 6.655 mL of 0.07667
Three common hydrocarbons that contain four carbons are listed here, along with their standard enthalpies of formation: Calculate the molar enthalpy of combustion to CO2(g) and H20(l)
an experiment requires 43.0 of ethylene glycol a liquid whose density is 1.114 . rather than weigh the sample on a
We add excess Na2CrO4 solution to 17.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams.
System were found to be [N2]=[O2]=0.200 M and [NO]=0.500 M. N2(g) + O2(g) 2NO(g) If more NO is added, bringing its concentration to [0.800 M], what will the final concentration of NO be after equilibrium is re-established?
Nitrogen and Oxygen form an extensive series of oxides of general formual NxOy; at least 7 are known. One of them is a blue solid that comes apart reversibly in the gas phase. It contains 36.84% N and the rest is Oxygen. What is the empirical form..
A sample of unknown material containing C,H,& O is analyzed to determine the molecular weight. A 1.25g sample is burnt and produces 1.72g of CO2.
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