Answer to Question #68573 in Physical Chemistry for EMMANUEL

Question

Question 17 : Which statement is false?
Gases can be expanded without limit.
The density of a gas is constant as long as its temperature remains constant.
The molecular weight of a gaseous compound is a non-variable quantity.
Gases diffuse into each other and mix almost immediately when put into the same container.
Question 18 : A separation technique which involves charging particles and then attracting them to oppositely charged metal plates is called _____ separation.
gravity
electrostatic
magnetic
absorption
Question 19 : Which of these is a derived physical quantity?
Time
Mass
Area
Luminous intensity
Question 20 : Which of these terms is not used to describe a solid which remains behind during a separation process?
sediment
filtrate
solution
residue

Answer 1

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