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What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the energy change when a substance is formed from its elements in their standard states. It represents the heat energy released or absorbed during the formation process. A negative value indicates that the reaction is exothermic, while a positive value indicates an endothermic reaction.
What is the best definition of the enthalpy of formation Hf?
The enthalpy of formation (ΔHf) is the heat associated with the formation of one mole of a compound from its elements in their standard states. It represents the energy change when the compound is formed from its constituent elements under standard conditions.
What is the best describes A mixture that has a lot of substance dissolved in it?
A concentrated solution.
Which best describes a chemical oxidation?
A chemical oxidation involves the loss of electrons by a substance, resulting in an increase in its oxidation state. This process typically involves the reaction of a substance with oxygen or another oxidizing agent. It often leads to the formation of new chemical bonds and the release of energy.
Which energy profile best shows that the enthalpy of formation of CS2 is 89 4 KJ mol?
Graph D `WXM
What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the energy change when a substance is formed from its elements in their standard states. It represents the heat energy released or absorbed during the formation process. A negative value indicates that the reaction is exothermic, while a positive value indicates an endothermic reaction.
What is the best definition of the enthalpy of formation?
The enthalpy of formation is defined as the change in enthalpy when one mole of a compound is formed from its constituent elements in their standard states. It is a measure of the energy released or absorbed during the formation of a substance. This value is crucial in thermodynamics and helps in predicting the feasibility of chemical reactions. The standard enthalpy of formation for elements in their standard states is defined as zero.
What is the best definition of the enthalpy of formation Hf?
The enthalpy of formation (ΔHf) is the heat associated with the formation of one mole of a compound from its elements in their standard states. It represents the energy change when the compound is formed from its constituent elements under standard conditions.
which energy profile best shows that the enthalpy of formation of CS2 is 89.4 kJ/mol?
graph D
What best describes temperature of substance?
average kinetic energy
What best describes a decomposition reaction?
a single substance breaks down into more than one substance
What is the best describes A mixture that has a lot of substance dissolved in it?
A concentrated solution.
Which best describes a chemical oxidation?
A chemical oxidation involves the loss of electrons by a substance, resulting in an increase in its oxidation state. This process typically involves the reaction of a substance with oxygen or another oxidizing agent. It often leads to the formation of new chemical bonds and the release of energy.
What best describes the different between a mixture and a pure substance?
A mixture has different properties throughout; a pure substance has the same properties throughout.
What statement best describes the formation of diamonds?
its not Diamonds form in talc under very high pressure.
Which term best describes how much of a substance is mixed with another substance?
Percent mixture is a way the amount of one substance is in a mixture. Example: a 25% mixture of salt with flour.
What definition best describes and acid?
A substance in a solution that releases hydrogen ions and lowers the pH APEX
