Question 1 The graph below is a profile of the average kinetic energies of particles in a gas at two different
temperatures
300 K
number of
particles
310K
activation energy.
Consider the 300 K curve. Explain what this curve tells you about the speed of the particles
in this gas sample.
2 marks

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Which of the following notations would be the appropriate and final way to display the formula for magnesium chloride a. mgcl2 b. mg+2cl–1 c. mgcl2 d. mgcl

Four statements about the development of the atomic model are shown below. a: electrons have wavelike properties. b: atoms have small, negatively charged particles. c. the center of an atom is a small, dense nucleus. d: atoms are hard, indivisible spheres. which order of statements represents the historical development of the atomic model? c-d-a-b c-d-b-a d— в-а — с d-b-c-a