Question

How many grams of CaCl₂ equal 4.26 moles of CaCl₂?

A. 26.1 g
B. 170 g
C. 302 g
D. 473 g
E. 322 g

Answer 1

The mass of 4.26 moles of CaCl₂ is calculated by multiplying the number of moles by the molar mass of CaCl₂ (110.98 g/mol), resulting in approximately 473 grams.

Step-by-step explanation:

To calculate the mass of 4.26 moles of CaCl₂, you use the molar mass of CaCl₂, which is 110.98 grams per mole. By multiplying the number of moles by the molar mass, you can find the mass in grams of the substance.

The calculation is as follows:

1. Determine the molar mass of CaCl₂: 110.98 g/mol.
2. Multiply the number of moles by the molar mass: 4.26 moles × 110.98 g/mol.
3. Calculate the result: 4.26 moles × 110.98 g/mol = 472.9778 grams.

Therefore, the mass of 4.26 moles of CaCl₂ is approximately 473 grams, which corresponds to answer choice D.