How many moles are in 36 gof Be? 0.25 mol 320 mol 45J.mol 2.2times 10^wedge 25mol 4.0 mol

To determine the number of moles in 36 grams of beryllium (Be), we need to use the molar mass of beryllium.<br /><br />The molar mass of beryllium is 9.0122 g/mol.<br /><br />To calculate the number of moles, we can use the formula:<br /><br />Number of moles = Mass (g) / Molar mass (g/mol)<br /><br />Plugging in the values:<br /><br />Number of moles = 36 g / 9.0122 g/mol<br />Number of moles = 4.0 mol<br /><br />Therefore, the correct answer is 4.0 mol.