Pagina de inicio
/
Química
/
Multiple Choice 1 point Inasample containing 2.4 moles of Li_(2)O, how many lithium atoms are there? 6.74times 10^24 Liatoms 2.89times 10^24 Liatoms 4.30times 10^23 Liatoms 1.30times 10^24 Liatoms

Problemas

Multiple Choice 1 point
Inasample containing 2.4 moles of Li_(2)O, how many lithium atoms are there?
6.74times 10^24 Liatoms
2.89times 10^24 Liatoms
4.30times 10^23 Liatoms
1.30times 10^24 Liatoms

Multiple Choice 1 point Inasample containing 2.4 moles of Li_(2)O, how many lithium atoms are there? 6.74times 10^24 Liatoms 2.89times 10^24 Liatoms 4.30times 10^23 Liatoms 1.30times 10^24 Liatoms

Solución

avatar
Danielprofessionell · Tutor durante 6 años
expert verifiedVerificación de expertos
4.0 (152 votos)

Responder

\(2.89 \times 10^{24}\) lithium atoms

Explicar

To find the number of lithium atoms in a sample containing 2.4 moles of \(Li_2O\), we need to follow these steps:<br /><br />1. Determine the number of moles of lithium atoms in the sample. Since each molecule of \(Li_2O\) contains 2 lithium atoms, we multiply the moles of \(Li_2O\) by 2 to get the moles of lithium atoms.<br />2. Use Avogadro's number (\(6.022 \times 10^{23}\) atoms/mole) to convert the moles of lithium atoms to the number of lithium atoms.<br /><br />Let's calculate:<br /><br />1. Moles of lithium atoms = 2.4 moles of \(Li_2O\) × 2 = 4.8 moles of lithium atoms<br />2. Number of lithium atoms = 4.8 moles × \(6.022 \times 10^{23}\) atoms/mole = \(2.89 \times 10^{24}\) lithium atoms
Haz clic para calificar: