Aluminum reaction with an excess of copper sulphate
What is the percent yield if 4.65g of copper is produced when 1.87g of aluminum reacts with an excess of copper(II) sulfate?
2Al(s)+3CuSO4(aq)==>Al2(SO4)3(aq)+3Cu(s)
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A solution of sodium chloride in water has a vapor pressure of 20.1 torr at 25°C. What is the mole fraction of NaCl solute particles in this solution?
Electromagnetic radiation has an energy of 926 J. The wavelength of this radiation is 856 nm. How many photons are required to generate this energy?
Design a range of five volumes of the NaCl standard solution that you will spike into equal aliquots of the unknown. First decide what volume of tonic water unknown to add to each 25-mL volumetric flask. Try to have the third out of five spiked so
Determine the empirical formula of sodium azide.
Explain the order of elution you observed while performing the gas chromatography for this experiment. What property of the product molecules seems most important in determining relative retention times?
Imagine that you dissolve 10.0g of a mixture of NaNO3 and KF in 100.0g of water and find that the temperature rises by 2.00 degrees C. Using the following data, calculate the mass of each compound in the original mixture.
What are the freezing point and boiling point of an aquenous solution of 15.5g glucose (C6H12O6) dissolved in 150 g of water?
If 94 of heat are added to a pure gold coin with a mass of 16 , what is its temperature change? Specific heat capacity of gold is 0.128 .
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With reference to interviews with people involved in the riots, compare and contrast thematic analysis and narrative analysis
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