This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Here are the solutions to your chemistry problems: 1. Calculate the molar mass of Mg(OH)_2 Step 1: Identify the atomic masses of each element. • Magnesium (Mg): 24.31 \, g/mol • Oxygen (O): 16.00 \, g/mol • Hydrogen (H): 1.01 \, g/mol Step 2: Calculate the molar mass using the chemical formula Mg(OH)_2. The formula indicates 1 Mg atom, 2 O atoms, and 2 H atoms. Molar mass of Mg(OH)_2 = (1 × Mg) + (2 × O) + (2 × H) Molar mass = (1 × 24.31 \, g/mol) + (2 × 16.00 \, g/mol) + (2 × 1.01 \, g/mol) Molar mass = 24.31 \, g/mol + 32.00 \, g/mol + 2.02 \, g/mol Molar mass = 58.33 \, g/mol The molar mass of Mg(OH)_2 is 58.33 g/mol. 2. Calculate how many moles are present in 34g of Ca(OH)_2 Step 1: Identify the atomic masses of each element. • Calcium (Ca): 40.08 \, g/mol • Oxygen (O): 16.00 \, g/mol • Hydrogen (H): 1.01 \, g/mol Step 2: Calculate the molar mass of Ca(OH)_2. The formula indicates 1 Ca atom, 2 O atoms, and 2 H atoms. Molar mass of Ca(OH)_2 = (1 × Ca) + (2 × O) + (2 × H) Molar mass = (1 × 40.08 \, g/mol) + (2 × 16.00 \, g/mol) + (2 × 1.01 \, g/mol) Molar mass = 40.08 \, g/mol + 32.00 \, g/mol + 2.02 \, g/mol Molar mass = 74.10 \, g/mol Step 3: Calculate the number of moles using the given mass and the molar mass. The formula for the number of moles (n) is: n = given mass (m)molar mass (M) n = 34 \, g74.10 \, g/mol n ≈ 0.4588 \, mol Approximately 0.459 moles are present in 34g of Ca(OH)_2. Send me the next one 📸