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
Step 1: Convert the mass of silicon from milligrams to grams. The given mass of the silicon chip is 5.68 mg. There are 1000 mg in 1 g. 5.68 mg Si × 1 g1000 mg = 0.00568 g Si Step 2: Convert the mass of silicon in grams to moles. The molar mass of silicon (Si) is 28.09 g/mol. 0.00568 g Si × 1 mol Si28.09 g Si Step 3: Convert moles of silicon to the number of atoms. Avogadro's number states that there are 6.022 × 10^23 atoms in 1 mol of any substance. (0.00568 g Si × 1 mol Si28.09 g Si) × 6.022 × 10^23 atoms Si1 mol Si Step 4: Calculate the final number of atoms. Combine the terms: Number of atoms = 5.68 × 1 × 6.022 × 10^231000 × 28.09 × 1 Number of atoms = 34.20536 × 10^2328090 Number of atoms = 3.420536 × 10^2428090 Number of atoms ≈ 0.00012177 × 10^24 Number of atoms ≈ 1.2177 × 10^20 Rounding to three significant figures, which is consistent with the given mass: Number of atoms ≈ 1.22 × 10^20 atoms The number of silicon atoms present is 1.22 × 10^20 atoms. That's 2 down. 3 left today — send the next one.