I do not understand how to complete 1b and 1c. I provided all the information I

Question

I do not understand how to complete 1b and 1c. I provided all the information I have. TREATMENT OF DATA (50 PTS.) Summarize the results of the following calculations in Table 3 at the end of this section. 1. Using your data from Table 1, determine 'rxn for Mgo(s) + 2 H. (aq) Mg2. (aq) + H2O a. (5) Calculate moles of Mgo l.00 0.3 044 b. (6) Using Eq. 7, calculate the heat gained by the calorimeter and contents. Use Cp 4.184 J/g C for the heat capacity of the solution and Cp 21 J/C for the heat capacity of the calorimeter soln c. (4) using Eq. 9, calculate H'm in units of kJ/mol. rxnbrxn moles of imiting RcGctant

Explanation / Answer

1b

q rxn = - mass of solution x Cp x (T2-T1) - 21 J/C x (T2-T1)

= - 101 g x 4.184 J/gC x (30.20 - 22.07)C - 21 J/C x (30.20 - 22.07)C

= - 3435.61 - 170.73

= - 3624.34 J

1c

H rxn = q rxn / moles of limiting reactant

= - 3624.34 J / 0.02484 mol

= - 145907.41 J/mol

= - 145.907 kJ/mol

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