Answer:
0.0646 mole.
Explanation:
The following data were obtained from the question:
Number of molecules = 3.89×10²² molecules
Number of mole =?
The number of mole present in 3.89×10²² molecules of CCl₄ can be obtained as follow:
From Avogadro's hypothesis:
6.02×10²³ molecules = 1 mole
Therefore,
3.89×10²² molecules = 3.89×10²² molecules × 1 mole / 6.02×10²³ molecules
3.89×10²² molecules = 0.0646 mole
Thus, 0.0646 mole is present in 3.89×10²² molecules of CCl₄.
Your answer would be chromium (Cr)
