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A sample of 4.5g of methane occupies 12.3L at 305K. Calculate the work done when the gas expands isothermically against a constant external pressure of 210 Torr until it's volume has increased by 3.5L, then calculate the work done if the expansion occurred reversibly.
what are the kinds of attractive forces that might bind congo red to cotton
Use Le Chatelier's principle to explain the different colors found in the equilibra in Methyl orange
A sample of hydrogen was collected by water displacement at 23.0°C and an atmospheric pressure of 735 mmHg. Its volume is 568 mL. After water vapor is removed
An unknown solid mixture containing benzoic acid,copper(II)sulfate and sand. She added 15mL.of acetone to her sample. Which component of the mixture dissolved in the acetone?
Calculate the concentration of acid(or base) remaining in solution when 5.39mL of 6.93M HNO3 is added to 9.37mL of 8.37M NaOH. Note the final volume is the sum of two added volumes. which of the following statement is true for the solution after m..
Consider the titration of 30.0 mL of 0.035 M NH3 with 0.030 M HCl. Calculate the pH after the following volumes of titrant have been added.
what mass of this substance must evaporate in order to freeze 119 of water initially at 24? the heat of fusion of water
empirical formula for 2.80 g nitrogen and 8.00 g oxygen. what is the molecular formula empirical formula of NH2Cl, molar mass = 51.5 g/mol
What is the molarity of a 50% (by mass) NaOH. How did you find this value? Using this molarity, show that 13ml of 50% by mass NaOH diluted to 2200ml with distilled water yields a solution that is about 0.1M NaOH.
Draw a molecular orbital energy level diagram and determine the bond order for each of the following
For the reaction 2Mg(s) + O2(g) ? 2MgO(s), how many moles of O2 are required to react completely with 0.0232 moles of Mg
A 325-mL sample of solution contains 25.3 g of CaCl2 calculate the molar concentration of Cl in this solution
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