What quantity of heat, in kJ, is required to convert 13.0 g of ethanol (C2H5OH) at 23.0°C to a vapor at 78.3°C (its boiling point)? (specific heat capacity of ethanol = 2.46 J/g C; AHvap = 39.3 kJ/mol) %3D

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Q: Temperature

A:

Q: What amount of heat energy is needed to warm 4.00 grams of H2O (ℓ) by 25°C?

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Q: It requires ____ kJ of heat to boil 7.5 grams of methanol (CH3OH) at its boiling point. The ΔHvap of…

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A:

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Q: 12.) A 36.0 g sample of liquid water at 100.0°C is heated to 145.0 C. How much heat does the water…

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Q: Calculate the quantity of heat is absorbed when 7.01 grams water warms from -25 °C to 85 °C…

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Q: How much energy is required to vaporize 89.5 g of ethanol (C2H5OH) at its boiling point, if Hvap =…

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Q: How much heat energy is required to boil 66.7 g of ammonia, NH3? The molar heat of vaporization of…

A: Mass of NH3 = 66.7 g  Molar heat of vaporization = 23.4 KJ/mol

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Q: Based on the thermodynamic properties provided for methanol (below), select from the following list…

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Q: What amount of heat, in kJ, is required to vaporize 198.00 g of ethanol (C2H5OH)? (AHvap = 43.3…

A: Interpretation: The amount of heat required to vaporize 198 g ethanol, is to be determined.

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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.