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The heat change for a chemical equation is the difference in enthalpy between the reactants and the products. It can be calculated by determining the sum of the enthalpies of formation for all the products and subtracting the sum of the enthalpies of formation for all the reactants. This value indicates whether a reaction releases heat (exothermic) or absorbs heat (endothermic).

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Q: What is the heat change for an equation?
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Related questions

Where does heat appear in the equation?

Heat appears in the equation as either a reactant (if heat is added to the reaction) or as a product (if heat is released by the reaction). It is typically denoted by the symbol "ΔH" for the change in enthalpy.


What is the title of the chemical equation that includes the heat change?

Law of Thermodynamics


What s the correct equation rearranged to solve for specific heat?

The correct equation to solve for specific heat is q = mcΔT, where q represents heat energy, m is mass, c is specific heat capacity, and ΔT is the temperature change. Rearranging the equation to solve for specific heat, we get c = q / (mΔT).


What can specific heat be used to measure change in?

Specific heat can be used to measure changes in thermal energy by using the equation: Change in thermal energy = mass x Change in temperature x specific heat


The change in energy represented by a thermochemical equation is always?

The change in energy represented by a thermochemical equation is always given in units of energy, typically kilojoules (kJ) or kilocalories (kcal), and can be either exothermic (releasing heat) or endothermic (absorbing heat).


What equation represents the energy it takes to heat a sunstance?

The equation that represents the energy required to heat a substance is Q = mcΔT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.


What is the equation for meausuring the change in thermal energy?

The equation for measuring the change in thermal energy is: Q = mcΔT, where Q is the change in thermal energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.


What equation represents the energy it takes to heat a substance?

Q=mc∆T


For the specific heat capacity equation q equals m x C x Δt does change in temperature always have to be positive?

No, the change in temperature does not always have to be positive in the specific heat capacity equation. It can be positive if the temperature increases or negative if the temperature decreases. The sign of the change in temperature (Δt) will depend on whether heat is being added or removed from the system.


Is described by the equation H2O(l) plus heat H2O(g)?

This is the a change of phase from liquid to gas.


What is the equation for calculating how much heat energy (calories) transferred to or from a mass of water.?

The equation is q = mC∆T where q is the heat; m is the mass of water; C is the specific heat of water (1 cal/g/deg); and ∆T is the change in temperature.


The amount of heat gained or lost by a substance is equal to the product of?

the substance's mass, its specific heat capacity, and the temperature change it undergoes, as given by the equation Q = mcΔT.