13. A sample of ice at 0°C melts after absorbing 300,000J of heat. How many moles of H,0 are contained in the sample? Assume that the heat of fusion of ice is 333 J/g
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
![**Thermodynamics Practice Problem: Heat Absorption by Melting Ice**
**Problem 13:**
A sample of ice at 0°C melts after absorbing 300,000 J of heat. How many moles of \( H_2O \) are contained in the sample? Assume that the heat of fusion of ice is 333 J/g.
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**Solution Steps:**
1. **Identify the given values:**
- Heat absorbed (\( Q \)): 300,000 J
- Heat of fusion of ice (\( \Delta H_f \)): 333 J/g
2. **Calculate the mass of ice melted using the formula:**
\[
Q = m \cdot \Delta H_f
\]
Rearrange to solve for mass (\( m \)):
\[
m = \frac{Q}{\Delta H_f} = \frac{300,000 \text{ J}}{333 \text{ J/g}} = 900.9 \text{ g}
\]
3. **Convert the mass to kilograms:**
\[
900.9 \text{ g} = 0.9009 \text{ kg}
\]
4. **Find the number of moles of \( H_2O \):**
The molar mass of water (\( H_2O \)) is approximately 18.015 g/mol. Thus, the number of moles (\( n \)) is:
\[
n = \frac{900.9 \text{ g}}{18.015 \text{ g/mol}} \approx 50 \text{ moles}
\]
**Answer:**
Approximately 50 moles of \( H_2O \) are contained in the sample that absorbed 300,000 J of heat to melt at 0°C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fca27c75e-3388-4ea2-9774-5606c29841ed%2F09f80448-5348-4f0f-a4fd-15f9b8629084%2F5vdym1_processed.jpeg&w=3840&q=75)
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