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Rufina [12.5K]
3 years ago
11

How many moles of oxygen react with 0.23 moles of NH3

Chemistry
2 answers:
Elina [12.6K]3 years ago
4 0
0.025 is how many moles of oxygen to react with NH3
                                                 
Xelga [282]3 years ago
3 0
0.025 is how many moles of oxygen to react with NH3
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5. A sample of benzene (C6H6), weighing 7.05 g underwent combustion in a bomb calorimeter by the following reaction:
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Answer:

A sample of benzene (C6H6), weighing 7.05 g underwent combustion in a bomb calorimeter by the following reaction:

2 C6H6 (l) + 15 O2 (g) → 12 CO2 (g) + 6 H2O (l)

The heat given off was absorbed by 500 g of water and caused the temperature of the water and the calorimeter to rise from 25.00 to 53.13 oC. The heat capacity of water = 4.18 J/g/oC and the heat capacity of the calorimeter = 10.5 kJ/oC. (1) what is the ΔH of the reaction?

Explanation:

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Heat absorbed by water = mass of water x specific heat capacity of water x change in temperature

Heat absorbed by water =  500 g x 4.18 J/g. oC x (53.13-25.00)oC

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Heat absorbed by calorimeter = heat capacity of calorimeter x change in temperature

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Number of moles of benzene given is:

number of moles = goven mass of benzene /its molar mass

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=0.0903mol

Hence, the heat released by the reaction is:

= 354156.7 J / 0.0903 mol

=  3922.00 kJ/mol

Answer:

The heat released during the combustion of 7.05g of benzene is 3922.00kJ/mol.                                              

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