Subject: Chemistry
Book: General Chemistry
The standard enthalpy of formation (ΔHf°) is the enthalpy change when one mole of a compound is formed from its elements in their standard states (1 atm, 25 °C). These values form the basis for calculating reaction enthalpies using Hess’s law. For instance, ΔHf° of CO2(g) is –393.5 kJ/mol. Compiling these data in tables enables quick assessment of reaction energetics.
Which element is a key component of DNA and RNA?
View QuestionWhat is the chemical formula for potassium dichromate?
View QuestionWhat is the chemical formula for methanol?
View QuestionWhat is the chemical formula for sodium silicate?
View QuestionWhich element is the lightest in the periodic table?
View QuestionWhich element is used in thermometers?
View QuestionWhich element has the atomic number 92?
View QuestionWhat is the chemical formula for ammonia?
View QuestionWhat is the chemical formula for carbon tetrachloride?
View QuestionWhat is the chemical formula for calcium phosphate?
View Question