The chemical reaction that occurs in a gas grill is the combustion of propane, C3H8. Write a balanced equation for this reaction
2 answers:
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Answer: 1.98 g
Explanation:
To calculate the moles :
The balanced given equation is:
According to stoichiometry :
4 moles of will produce = 2 moles of
Thus 0.22 moles of will produce=
of
Mass of
Thus 1.98 g of water is produced along with 5.0 L of at STP
The change in internal energy (ΔΕ) of a system : -8 kJ
<h3>Further explanation </h3>The laws of thermodynamics 1 state that: energy can be changed but cannot be destroyed or created
The equation is:
Energy owned by the system is expressed as internal energy (U)
This internal energy can change if it absorbs heat Q (U> 0), or releases heat (U <0). Or the internal energy can change if the system does work or accepts work (W)
The sign rules for heat and work are set as follows:
• The system receives heat, Q +
• The system releases heat, Q -
• The system does work, W -
• the system accepts work, W +
5 kJ of work is done on the system : W = +5 kJ
releases 13 kJ of energy to the surroundings : Q = -13 kJ