If the molar mass of CCl4 is 153.81 g/mol, how many grams are needed to have 5.000 mol?

If the molar mass of CCl4 is 153.81 g/mol, how many grams are needed to have 5.000 mol?

• A. 5.000 g
• B. 30.76 g
• C. 769.0 g
• D. 796.05 g

Answer: (D)

To find the mass in grams of CCl4 needed for 5.000 mol, you can use the relationship between moles, molar mass, and mass. The formula to calculate mass from moles and molar mass is: \[ \text{mass (g)} = \text{moles} \times \text{molar mass (g/mol)} \] Using the given values: - Moles of CCl4 = 5.000 mol - Molar mass of CCl4 = 153.81 g/mol Now, substituting these values into the formula: \[ \text{mass (g)} = 5.000 \, \text{mol} \times 153.81 \, \text{g/mol} \] \[ \text{mass (g)} = 769.05 \, \text{g} \] Therefore, the correct answer, rounded to three significant figures, is 769.0 g. This calculation shows the direct and proportional relationship that exists between the number of moles of a substance, its molar mass, and the resulting mass in grams. The precision in these calculations is vital in analytical chemistry, where accurate measurements can vastly impact experimental outcomes

To find the mass in grams of CCl4 needed for 5.000 mol, you can use the relationship between moles, molar mass, and mass. The formula to calculate mass from moles and molar mass is:

[ \text{mass (g)} = \text{moles} \times \text{molar mass (g/mol)} ]

Using the given values:

• Moles of CCl4 = 5.000 mol

• Molar mass of CCl4 = 153.81 g/mol

Now, substituting these values into the formula:

[ \text{mass (g)} = 5.000 , \text{mol} \times 153.81 , \text{g/mol} ]

[ \text{mass (g)} = 769.05 , \text{g} ]

Therefore, the correct answer, rounded to three significant figures, is 769.0 g. This calculation shows the direct and proportional relationship that exists between the number of moles of a substance, its molar mass, and the resulting mass in grams. The precision in these calculations is vital in analytical chemistry, where accurate measurements can vastly impact experimental outcomes