Problemas
Multiple Choice 1 point How many atoms are in a 25.0 g sample of Carbon (C)? 8.50times 10^23 atoms 1.61times 10^24 atoms 1.24times 10^24 atoms 2.10times 10^23 (1023 atoms Clear my selection
Roztwór
Elisa
élite · Tutor durante 8 años
4.5
(225 Votos)
Respuesta
To determine the number of atoms in a 25.0 g sample of Carbon (C), we need to use the molar mass of Carbon and Avogadro's number.Given information:- Mass of the sample: 25.0 g- Molar mass of Carbon (C): 12.01 g/mol- Avogadro's number: 6.022 × 10^23 atoms/molStep 1: Calculate the number of moles of Carbon in the sample.Number of moles = Mass of the sample / Molar mass of CarbonNumber of moles = 25.0 g / 12.01 g/mol = 2.083 molStep 2: Calculate the number of atoms in the sample.Number of atoms = Number of moles × Avogadro's numberNumber of atoms = 2.083 mol × 6.022 × 10^23 atoms/mol = 1.24 × 10^24 atomsTherefore, the correct answer is:
atoms