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Heat of combustion of a hydrocarbon is based on the reaction:
fuel + oxygen --> carbon dioxide + water (unless you have some nitrogen or sulfur in the fuel, in which case it gets a little more complex)
The heat of formation of O2 is zero (O2 is the reference state)
The heat of formation of CO2 is the same as the heat of combustion for carbon
The heat of formation of H2O is the same as the heat of combustion for hydrogen
To find the heat of formation of the fuel, you subtract the heat of combustion from the heats of formation - (weighted with the stoichiometric coefficients from the balanced reaction equation).
What else can I help you with?
What is the formula for finding the final temperature in specific heat?
The formula for finding the final temperature in specific heat calculations is given by: [ T_f = T_i + \frac{Q}{m \cdot c} ] where (T_f) is the final temperature, (T_i) is the initial temperature, (Q) is the heat added or removed, (m) is the mass of the substance, and (c) is the specific heat capacity. This equation assumes no phase change occurs during the process.
What is the heat of formation of n2O4?
The heat of formation of zinc nitrate is -2304 kJ.
What is the relationship between a compound's stability and its heat of formation?
The stability of a compound is inversely related to its heat of formation; a compound with a lower heat of formation is typically more stable. This is because a lower heat of formation indicates that the compound is formed from its elements with less energy input, suggesting strong bonds and a favorable arrangement. Conversely, a high heat of formation indicates less stability, as it implies that more energy is required to form the compound from its constituent elements. Thus, stable compounds generally have negative or low heat of formation values.
What is the standard heat of formation of a free element in its standard state?
The standard heat of formation of a free element in its standard state is defined as zero. This is because it is the reference point from which the heat of formation of other compounds is determined.
Is there heat in the formation of sedimentary rocks?
Yes, heat is involved in the formation of some sedimentary rocks. This heat can come from nearby volcanic activity or deep within the Earth's crust, and can contribute to the process of lithification, which transforms loose sediment into solid rock. However, overall, heat is not as significant in sedimentary rock formation as it is in igneous and metamorphic rock formation.
What formula is Q equals mcpdeltaT?
q is the amount of heat.. that formula is used in finding heat problems
What is the formula in finding the amount of heat transfered to an object?
The formula for finding the amount of heat transferred to an object is Q = mc(change in T). Q represents heat energy in J, m is the mass of the object in kg, and c is the specific heat of the material.
What is the formula for finding the mass in specific heat?
The formula for finding mass using specific heat is: mass = (heat energy)/(specific heat x change in temperature). This formula is derived from the specific heat equation, q = mcΔT, where q represents heat energy, m is mass, c is specific heat, and ΔT is the change in temperature. By rearranging the equation to solve for mass, we can determine the mass of a substance based on the amount of heat energy supplied, the specific heat capacity of the material, and the resulting change in temperature.
What is the formulae for lithium carbonate heat?
The formula for the heat of formation of lithium carbonate (Li2CO3) can be determined using the enthalpies of formation of the individual elements (Li, C, and O) involved in the reaction. The heat of formation of a compound is the difference in enthalpy between the product compound and the reactant elements under standard conditions.
What is the formula for finding the final temperature in specific heat?
The formula for finding the final temperature in specific heat calculations is given by: [ T_f = T_i + \frac{Q}{m \cdot c} ] where (T_f) is the final temperature, (T_i) is the initial temperature, (Q) is the heat added or removed, (m) is the mass of the substance, and (c) is the specific heat capacity. This equation assumes no phase change occurs during the process.
What is the formula for finding probabilities?
The formula for finding probability depends on the distribution function.
Is the formula for finding the area of an oval the same as the formula for finding the area of a circle?
No because the formula for finding the area of an oval, which is an ellipse, is quite different
What is the heat of formation for H2?
The heat of formation for H2 is 0 kJ/mol.
What is the heat of formation of n2O4?
The heat of formation of zinc nitrate is -2304 kJ.
What is the formula for finding joules?
There isn't a formula for finding joules. It is a way for finding a force or giving an example.
How does the heat of formation vary at different temperatures?
The heat of formation changes with temperature. At higher temperatures, the heat of formation tends to increase, while at lower temperatures, it tends to decrease.
How to calculate the heat of reaction in a chemical reaction?
To calculate the heat of reaction in a chemical reaction, you can use the formula: H (Hf products) - (Hf reactants), where H is the heat of reaction, Hf is the standard heat of formation, and the symbol means to sum up the values for all products and reactants. This formula helps determine the amount of heat released or absorbed during a chemical reaction.
