Matter can not be created nor destroyed: it can only be

a) Destroyed a little bit

b) Invisible

c) Transformed, changed

d) None of the above

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A flexible container holds 100.0 miles of a gas. And additional 100.0 moles of gas particles are pumped into the container. The pressure and temperature remain constant. Which of the following stamens is true. A. Volume will double b.

The number of protons in the nucleus is always equal to the number of neutrons. True or False?

Identify the items in the list below that are examples of matter. Check all that apply

Which is the strongest base? [H+] = 10^-9 [H+] = 10^-11 [H+] = 10^-10 [H+] = 10^-12

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.

Consider the following quantities used in thermodynamics: E, H, q, w, S, G. How many of them are state functions? a. 2 b. 0 c. 3 d. 1 e. 4

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A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species?