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One mole of (C6H5)3COH dissolved in 1000 g of 100% sulphuric aciu lowers the freezing point of sulphuric acid twice as one mole of CH3OH shows in 1000 g of 100% sulphuric acid. Comment on it assuming that CH3OH is neither dissociated nor associated in sulphuric acid.
Explain in detail why the sugar would cause the ice cubes to melt while it causes the temperature to drop. Is this related to freezing point depression? please explain.
A chemistry lab experiment requires 36.3 g of silver nitrate. How many grams of a 12.5% by mass solution of silver nitrate should be used?
A flask contains a mixture of Ne(g) and Ar(g). There are 0.250 mol of Ne(g) which exerts a pressure of 205 mmHg. If the Ar(g) exerts a pressure of 492 mmHg.
What is the final temperature (in oC) of a 41.6 g sample of iron (specific heat = 0.444 J/(g K)) which evolves (-12.18) J of heat when it cools from 91.4oC
A 15.8 g strip of zinc metal was placed in 100.0 mL of silver nitrate, AgNO3(aq). when the reaction was complete, the strip of zinc had a mass of 13.1g. what was the concentration of the silver nitrate solution ?
determine the number of molecules of acetaminophen in a 500 mg
The remainder of the compound is oxygen. An aqueous solution of the complex has about the same electrical conductivity as an equimolar solution of K4[Fe(CN)6]. Write the formula of the compound, using brackets to denote the manganese and its coord..
Rb has two naturally occurring isotopes 85Rb and 87Rb, with masses 84.9118 amu and 86.9092 amu, respectively. The average atomic mass is 85.468 amu.
A bioengineer preparing cells for a cloning experiment bathes a small piece of rat epithelial tissue in a TRIS buffer, (HOCH2)3CNH2. the buffer is made by dissolving 48.0 g TRIS (pkb=5.91) in enough 0.095 M HCl to make 1.00 L of solution.
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6)
To melt an ionic solid, energy must be supplied to disrupt the forces between ions so the regular array of ions collapses. If the distance between the anion and cation in a crystalline solid decreases
If one mole of the following compounds were each placed into separate beakers containing the same amount of water, rank the Cl?(aq) concentrations from highest to lowest
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