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Question 2
The root-mean-square speed (thermal speed) of a certain sample of carbon dioxide molecules, with
a molecular weight of 44 g/mol, is 396 m/s. What is the root-mean-square speed (thermal speed) of
water vapor molecules, with a molecular weight of 18 g/mol, at the same temperature?
(1) 253 m s.
(2) 396 m s.
(3) 421 m s.
(4) 619 ms.
(6) None of the above,

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."