In the reaction 4Al+__O2→2Al2O3, what coefficient should be placed in front of the O2 to balance the reaction? Question 2 options:

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The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe