Calculate the heat (in kJ) required to transform 67.70 g of nitric acid from a solid at a temperature of -42 °C to a gas at 111 °C. Report your answer to one decimal place. Data: Molar mass of nitric acid, HNO 3 = 63.013 g/mol Melting point = -42 °C Boiling point = 83°C. Enthalpy of fusion = 10.5 kJ/mol Enthalpy of vaporization = 39.1 kJ/mol. Molar heat capacity of the liquid phase = 109.9 J/mol • K Molar heat capacity of the gas phase= 53.4 J/mol • K.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Calculate the heat (in kJ) required to transform 67.70 g of nitric acid from a solid at a temperature of -42 °C to a gas at 111 °C. Report your answer to one decimal place. Data: Molar mass of nitric acid, HNO 3 = 63.013 g/mol Melting point = -42 °C Boiling point = 83°C. Enthalpy of fusion = 10.5 kJ/mol Enthalpy of vaporization = 39.1 kJ/mol. Molar heat capacity of the liquid phase = 109.9 J/mol • K Molar heat capacity of the gas phase= 53.4 J/mol • K.
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