If the average speed of a helium atom at a certain temperature is 1220 m/s, what is the speed in miles per hour? (1 mi = 1609 m)

1 mile = 1609 m

and 1 hour = 3600 seconds

so we can convert 1220 m/s into miles per hour as following:

(1220 m/s) ×( 3600 sec/hour) ÷ (1609 m/mile)

= 2729.65 mile/hour

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explanation: i will tell you how to if u answer my question.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.