Which sublevels contain valence electrons in an atom of argon (ar) ?

A. 3s and 3p

B. 3s and 2p

C. 4s and 3p

D. 2s and 3d

When heat is applied to a solid and a gas begins to form, the change in entropy is positive. true fals?

Which of the following is NOT a basic feature of an electric circuit? a. resistor c. single throw b. cell d. wire

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Do all crystals have the same internal arrangements?

The mass of a substance is independent of the amount of the substance, while density depends on the amount of the substance.

Which groups of elements on the periodic table form metal ions that do not require roman numerals in their names?

Write the Chemical formula for the conjugate base of the following Bronsted-Lowry acids. A) H2SO4 B) HPO4^2-

The heat from the bonfire is transferred to the student's hands through the process of

How many atoms are present in 0.0845 moles of tungsten (W) ?

Indicate which reactions are redox reactions. check all that apply. check all that apply. 2na (s) + cl2 (g) →2nacl (s) cd (s) + pb2 + (aq) →cd2 + (aq) + pb (s) pb (no3) 2 (aq) + 2licl (aq) →pbcl2 (s) + 2lino3 (aq) c (s) + o2 (g) →co2 (g)