Whitney's 13th and 14th goals of the season -- one on the power play in the second period -- came after Carolina had built a 3-1 advantage. He assisted when Erik Cole opened the scoring at 3:51 of the first period.
Goaltender Cam Ward stopped 35 of 36 shots for the Hurricanes, who had dropped four of their previous five road contests.
Montreal's goal came from Andrei Kostitsyn on the power play at 9:36 of the second.
On the power play, Carolina converted both of its opportunities, while the Canadiens went 1 for 6.
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