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When 0.60 grams of a molecular covalent compound is dissolved in 10 grams of water, the freezing point of the soludion is -1.86 C. Given that the freezing point of pure water is 0 C and that the freezing point depression constant for water is 1.853 (C kg)/mol calculate the molar mass (g/mol) of this compound
Determine the quantity of stock 75% EtOH required to prepare 300ml of a 25% EtOH solution.
what is the molarity of a solution prepared using the given amount of solute and total volume of solution.
Write an orbital diagram for the ground state of the Calcium atom. Is this atomic substance diamagnetic or paramagnetic
A sample of pure NO2 is heated to 388C at which temperature it partially dissociates according to the equation.
Calculate to the correct number of significant figures the grams of potassum iodide that are present in 899.46 mL of an aqueous solution which is known to contain 17.960 g of potassum iodide per 100.00 mL of solution.
The "colbalt treatments" used in medicine for arresting certain types of cancer rely upon the ability of gamma rays to destroy canercous tissues. Cobalt-60 decays with the emission of Beta particles and gamma rays, with a half life of 5.27 years. ..
A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component to at least three significant figures.
calculate the solubilities (g A/100 gS) at 10.2 degrees C and 0 degrees C and the mass of solid crystals in the breaker at 0 degrees C. and if you have the time, I'd really appreciate help with:
If a sample of 0.188 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
A 2.45-g sample of strontium completely reacts with oxygen to form 2.89 g of strontium oxide. Use this data to calculate the mass percent composition of strontium in strontium oxide.
Calculate the molar mass of the biomolecule. for carbon tetrachloride, the boiling-point constant is 5.03 degrees C x kg/mol, and the boiling point of pure carbon tetrachloride is 76.50 degrees C.
How many grams of sodium bicarbonate and sodium carbonate, respectively, are needed to make 3 liters of 0.075 M buffer,
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