a) Cation exchange is an important aspect of soil fertility (i) Explain what is involved in CEC (ii) A clay soil is ideally believed to have a chemical formula of SisAl4O20(OH)4. The CEC of soil can be calculated using the formula below CEC=100gx Net negative (eq) Molecular weight of clay Given that the net negative charge of the clay soil is 1.14 eq. Calculate the CEC. -x1000 meq eq¹ zeoltre 5) What are the names of the ores from which the following metals are extracted; Zinc, lead gree hocktte and Cadmium.

a) Cation exchange is an important aspect of soil fertility (i) Explain what is involved in CEC (ii) A clay soil is ideally believed to have a chemical formula of SisAl4O20(OH)4. The CEC of soil can be calculated using the formula below CEC=100gx Net negative (eq) Molecular weight of clay Given that the net negative charge of the clay soil is 1.14 eq. Calculate the CEC. -x1000 meq eq¹ zeoltre 5) What are the names of the ores from which the following metals are extracted; Zinc, lead gree hocktte and Cadmium.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter3: Equation, The Mole, And Chemical Formulas

Section: Chapter Questions

Problem 3.48QE

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A power plant is driven by the combustion of a complex fossil fuel having the formula C11H7S. Assume the air supply is composed of only N2 and O2 with a molar ratio of 3.76:1.00, and the N2 remains unreacted. In addition to the water produced, the fuels C is completely combusted to CO2 and its sulfur content is converted to SO2. In order to evaluate gases emitted at the exhaust stacks for environmental regulation purposes, the nitrogen supplied with the air must also be included in the balanced reactions. a Including the N2 supplied m the air, write a balanced combustion equation for the complex fuel assuming 100% stoichiometric combustion (i.e., when there is no excess oxygen in the products and the only C-containing product is CO2). Except in the case of N2, use only integer coefficients. b Including N2 supplied in the air, write a balanced combustion equation for the complex fuel assuming 120% stoichiometric combustion (i.e., when excess oxygen is present in the products and the only C-containing product is CO2). Except in the case of use only integer coefficients c Calculate the minimum mass (in kg) of air required to completely combust 1700 kg of C11H7S. d Calculate the air/fuel mass ratio, assuming 100% stoichiometric combustion. e Calculate the air/fuel mass ratio, assuming 120% stoichiometric combustion.
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