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.
![### Question:
What is the heat required to melt 51.8 g of solid benzene, C6H6, at its melting point?
### Explanation:
To determine the heat required to melt a given mass of solid benzene at its melting point, you will need to use the formula:
\[ Q = m \times \Delta H_f \]
Where:
- \( Q \) is the heat required.
- \( m \) is the mass of the substance.
- \( \Delta H_f \) is the heat of fusion of the substance.
The heat of fusion (\( \Delta H_f \)) of benzene (C6H6) is 9.87 kJ/mol.
Given:
- Mass of benzene, \( m = 51.8 \) g
- Molar mass of benzene (C6H6) = 78.11 g/mol
To find the heat required, follow these steps:
1. **Convert the mass to moles:**
\[ \text{Moles of benzene} = \frac{51.8 \text{ g}}{78.11 \text{ g/mol}} \]
2. **Calculate the heat required:**
\[ Q = (\text{Moles of benzene}) \times (9.87 \text{ kJ/mol}) \]
Use these steps to calculate the amount of heat needed for the given mass of benzene.
Note: Remember to double-check the units and convert them as necessary.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf4fd61a-46d9-45b2-8502-88fe4eac45cd%2F429ce42a-3f05-490d-ac70-f37e427fbd3a%2Ftdtsydf_processed.jpeg&w=3840&q=75)
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