Final answer:
The number of moles of aluminum in 106 grams is calculated by dividing the mass by the molar mass of Al (26.98 g/mol), resulting in about 3.93 moles, which is not precisely given in the provided options.
Step-by-step explanation:
To calculate the number of moles of aluminum in 106 g, you need to know the molar mass of aluminum. The molar mass of aluminum (Al) is 26.98 g/mol. The conversion factor to get from grams to moles is, therefore, 1 mol Al/26.98 g Al. Using this factor, you divide the mass of aluminum you have by the molar mass of aluminum to find the moles:
Number of moles = Mass of Al (g) / Molar mass of Al (g/mol)
Number of moles = 106 g / 26.98 g/mol
When you do the calculation:
Number of moles = 3.93 mol Al (rounded to two decimal places)
The answer is not listed in the options a) through d), but the closest answer to 3.93 is b) 4.48, which seems to be a possible typo in the provided options. Therefore, when you calculate accurately, the number of moles of aluminum in 106 g is approximately 3.93 mol.