Saved Bookmarks
| 1. |
Total no. of protons in 36 ml of water at 4°C is |
|
Answer» Answer: 1.2046 × 10²⁵ Explanation: Given, VOLUME of water = 36ml and density of water at 4°C = 1g/ml so, mass of water = 36 × 1 = 36g Mole of water = mass/molar mass = 36g/18g/mol = 2 mol ∴ number of water MOLECULE = mole of water × AVOGADRO's number = 2 × 6.023 × 10²³ = 1.2046 × 10²⁴ We know, there are 10 protons in a molecule of water . e.g., 8 protons of Oxygen atom and 2 protons of each two HYDROGEN atoms. Now, number of protons = number of water molecule × 10 = 1.2046 × 10²⁴ × 10 = 1.2046 × 10²⁵ Hence, answer is 1.2046 × 10²⁵ |
|