Why do we often write the water product as a gas in complete combustion reactions?
Let's put it this way, then.
The majority of combustion reactions are exothermic, which means they release heat. This can be represented as follows:
It is true that water vapor could condense onto the insides of a bomb calorimeter in a closed system, but we usually only discuss the instants following the reaction.
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Water is written as a gas in complete combustion reactions because in most cases, combustion reactions occur at high temperatures, causing water to vaporize into steam. This representation helps to show that water is in its gaseous state at these elevated temperatures, rather than as a liquid. Additionally, writing water as a gas helps to balance the chemical equation properly.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- At what temperatures is water a gas?
- A 55.0-g aluminum block initially at 27.5 C absorbs 725 J of heat. What is the final temperature of the aluminum?
- Without doing any calculations, determine the sign of ΔSsys and ΔSsurr for each of the chemical reaction. Predict under what temperatures (all, low, or high), if any, the reaction will be spontaneous? C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) #ΔH_"rxn"^o =−2044kJ#
- A silver block, initially at 58.5°C, is submerged into 100.0 of water at 24.8°C in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 26.2 °C. What is the mass of the silver block?
- When is indirect calorimetry necessary?

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