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indicate the compartment (A or B) that will increase in volume for each of the following pairs of solutions separated by a semipermiable membranes: a) A.20%(m/v) starch B.10%(m/v) starch. b) A.10%(m/v) albumin B.2%(m/v) albumin. c) A. .5%(m/v) sucrose B. 5%(m/v) sucrose.
lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
After adding the two portions into the calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45*C. what is the heat capacity of the calorimeter?
Write the balanced formula unit equation for the reaction of dinitrogen pentoxide, N2O5, with water to form an acid. What is the sum of the coefficients in the balanced equation?
1.50 g of nh3 react with 2.75g of o2 which is the limiting reactant? How many grams of excess remain after the limiting reactant is completely consumed?
Ozone (O3) is produced in the laboratory from oxygen (O2) by means of an electric discharge. Once generated, ozone gradually decomposes into oxygen by first-order kinetics. The following data were obtained from a sample of freshly prepared ozone
How many magnesiun atoms are in 3 moles of Mg3(PO4)2? 2) A substance, NxOy has the composition by mass 69.57% O. Calculate the molecular formula of this substance if its molecular mass is 92 grams.
Consider the decomposition of calcium carbonate. Assume that ?H° = 177.8 kJ/mol and ?S° = 160.5 J/K·mol for the temperature range.
describe how these limestone objects are corroded by the sulfuric acid in polluted air, what chemical reaction is involved here?
How many liters of oxygen collected over H2O and measured at 27 degrees Celsius and 745.0 mm Hg can be prepared by decomposing 4.421 grams of gold (III) oxide? The vapor pressure of H2O at 27 degrees Celsius is 26.7 mm Hg.
5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?
a student prepares benzoic acid by hydrolying 6.47g of methyle benzoate (FW 136.15g/mol) using excess sodium hydroxide. If the student recovers 3.71g
What does the number 42 in whatman filter paper #42 mean? What does it indicate about the paper's properties? (what does it have to do with aluminum?)
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