**1. **Mole Concept**: - **Mole**: The mole is a fundamental unit in chemistry that represents (6.022 times 10^{23}) entities (atoms, molecules, ions, etc.). - **Formula**: ( text{Number of moles} = frac{text{Given mass}}{text{Molar mass}} ) **2. **Concentration of Solutions**: - **Molari...
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### **Numerical Problems in 9th Class Chemistry** **1. **Mole Concept**: - **Mole**: The mole is a fundamental unit in chemistry that represents (6.022 times 10^{23}) entities (atoms, molecules, ions, etc.). - **Formula**: ( text{Number of moles} = frac{text{Given mass}}{t...
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Add to cart### **Numerical Problems in 9th Class Chemistry** **1. **Mole Concept**: - **Mole**: The mole is a fundamental unit in chemistry that represents (6.022 times 10^{23}) entities (atoms, molecules, ions, etc.). - **Formula**: ( text{Number of moles} = frac{text{Given mass}}{t...
**1. **Mole Concept**: - **Mole**: The mole is a fundamental unit in chemistry that represents (6.022 times 10^{23}) entities (atoms, molecules, ions, etc.). - **Formula**: ( text{Number of moles} = frac{text{Given mass}}{text{Molar mass}} ) **2. **Concentration of Solut...
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Add to cart**1. **Mole Concept**: - **Mole**: The mole is a fundamental unit in chemistry that represents (6.022 times 10^{23}) entities (atoms, molecules, ions, etc.). - **Formula**: ( text{Number of moles} = frac{text{Given mass}}{text{Molar mass}} ) **2. **Concentration of Solut...
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