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 homework problems: 1. Calculate how many molecules are there in 24.4g of magnesium Step 1: Find the molar mass of magnesium (Mg). The atomic mass of magnesium (Mg) is 24.31 \, g/mol. Step 2: Convert the given mass of magnesium to moles. The formula for moles (n) is: n = mass (m)molar mass (M) n = 24.4 \, g24.31 \, g/mol n ≈ 1.0037 \, mol Step 3: Calculate the number of molecules (atoms) using Avogadro's constant. Avogadro's constant (N_A) is 6.02 × 10^23 \, particles/mol. The number of molecules (N) is given by: N = n × N_A N = 1.0037 \, mol × 6.02 × 10^23 \, atoms/mol N ≈ 6.042 × 10^23 \, atoms There are approximately 6.042 × 10^23 atoms in 24.4g of magnesium. 2. Calculate how many molecules are there in 2 moles of calcium Step 1: Calculate the number of molecules (atoms) using Avogadro's constant. Avogadro's constant (N_A) is 6.02 × 10^23 \, particles/mol. The number of molecules (N) is given by: N = n × N_A N = 2 \, mol × 6.02 × 10^23 \, atoms/mol N = 12.04 × 10^23 \, atoms N = 1.204 × 10^24 \, atoms There are 1.204 × 10^24 atoms in 2 moles of calcium. That's 2 down. 3 left today — send the next one.