Scelta multipla
How many molecules are present in 0.16 moles of carbon dioxide (CO_2)?
144
views
2. Atoms & Elements
Mole Concept
Scelta multipla
How many moles of iron are present in 3.15 × 10^{24} atoms of iron?
A
3.15 moles
B
0.523 moles
C
5.23 moles
D
1.90 moles
Guida verificata passo dopo passo1
Identify the given quantity: 3.15 \(\times\) 10^{24} atoms of iron.
Recall that 1 mole of any substance contains Avogadro's number of atoms, which is approximately 6.022 \(\times\) 10^{23} atoms/mole.
Set up the conversion from atoms to moles using the relationship: moles = \(\frac{\text{number of atoms}\)}{\(\text{Avogadro's number}\)}.
Substitute the given values into the formula: moles of iron = \(\frac{3.15 \times 10^{24}\)}{6.022 \(\times\) 10^{23}}.
Perform the division to find the number of moles of iron (do not calculate the final value here, just set up the expression).
Video correlati
Pratica correlata
