Methanol(CH3OH) has a melting point of -96.7°C and a boiling point of 64.7°C. Its heat of fusion and vaporization are ΔHfus= 3.18 kJ/mol and ΔHvap=37.6kJ/mol, respectively, and the heat capacities of its three phases are Cs(solid) = 3.28J/g°C, Cs(liquid) = 2.53 J/g°C, and Cs(gas) = 3.62J/g°C.   a. Sketch the heating curve for methanol. You should properly indicate the steepness of the heating portions, and the relative amount of heat required for the melting and boiling portions of the curve.   b. Calculate the heat released when 25.0 grams of methanol vapor at 100 °C is converted to liquid methanol at 50°C.    c. Liquid water has ΔHvap=40.7 kJ/mol. Which liquid requires more heat to completely convert to vapor?

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Q: into

A: T1 = -151.0 °C T2 = 98.0 °C Tm =-117.3 °C Tb = 78.3 °C

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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.