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Choose the chemical equation that describes the 

Which of the following chemical equations represents a reaction for an energy of formation (ΔHfo)?

45 g of ethanol (CH3CH2OH) is combined with 100 g of H2O. What is the mole fraction of ethanol in this solution?

Determine the convergence of the following series:

Using the disk method, find the volume of the solid obtained by rotating the region underneath the graph  on  around the -axis.

Determine which of the following integrals represents the area of the inner loop of 

Which series below can be shown either convergent or divergent by using direct comparison test? 

Determine the values of all positive for which the series will converge. Answer using interval notation.

Assume that converges to

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