Suppose a student performed a similar experiment using a CaCl2 compound. The student heated 25.0 grams of the hydrate for an appropriate amount of time to form the anhydrous compound. The following data were obtained:

Substance mass (grams)
- Mass of hydrate used: 25.00
- Mass of anhydrous salt formed: 18.87

Prior to performing the calculations, the student determined the molar masses of the anhydrous compound and H2O to be 110.98 g/mol and 18.02 g/mol, respectively. Furthermore, the student knows the hydrate formula will take the form of CaCl2•n H2O.

The student’s task is to determine n. The number of moles of CaCl2 remaining was ___ mol.

Group of answer choices:
A) 0.170
B) 1.39
C) 0.128
D) 1.05
E) 0.225