(d) If there are 4.5 moles of lithium chloride how many grams of lithium chloride are present? 1919

To determine the number of grams of lithium chloride (LiCl) present when there are 4.5 moles, we need to use the molar mass of lithium chloride.<br /><br />The molar mass of lithium chloride (LiCl) is calculated as follows:<br />- Lithium (Li) has an atomic mass of approximately 6.94 g/mol.<br />- Chlorine (Cl) has an atomic mass of approximately 35.45 g/mol.<br /><br />So, the molar mass of LiCl = 6.94 g/mol + 35.45 g/mol = 42.39 g/mol.<br /><br />Now, we can calculate the mass of 4.5 moles of lithium chloride:<br />Mass = Number of moles × Molar mass<br />Mass = 4.5 moles × 42.39 g/mol<br />Mass = 190.755 g<br /><br />Therefore, there are approximately 190.755 grams of lithium chloride present when there are 4.5 moles of lithium chloride.