Final answer:
The solubility of KClO₃ at 75 °C is not provided in the references, but the molar mass can be calculated by adding the atomic masses of its elements, resulting in 122.55 g/mol for KClO₃.
Step-by-step explanation:
The question at hand is about the solubility of KClO₃ (potassium chlorate) at 75 °C. The student is required to calculate how many grams of KClO₃ can be dissolved in 100 grams of water at this temperature. Unfortunately, the given references do not contain the specific solubility data for KClO₃ at 75 °C. Normally, to answer this question, reference to a solubility chart for KClO₃ would be required. Once the solubility is known in g/100 g of water, that value would be used to calculate the grams of KClO₃ that can be dissolved.
To calculate the molar mass of KClO₃, we add the atomic masses of potassium (K), chlorine (Cl), and three oxygen atoms (O). This will give us the molar mass of KClO₃. The atomic masses are approximately 39.10 g/mol for K, 35.45 g/mol for Cl, and 16.00 g/mol for each O atom.
Molar Mass Calculation:
K: 39.10 g/mol
Cl: 35.45 g/mol
O: 16.00 g/mol × 3 = 48.00 g/mol
Total: 39.10 + 35.45 + 48.00 = 122.55 g/mol
Therefore, the molar mass of KClO₃ is 122.55 g/mol.
To calculate the maximum amount of KClO₃ that can be dissolved at 75 °C, we would need the solubility from a reliable source, which is not currently provided. If we had the solubility, we could use the molar mass to convert from grams to moles if needed.