Which of the following is NOT a characteristic of insects? a. one pair of antennae b. five legs c. one or two pairs of wings d. none of the above

The strongest intermolecular interactions between hydrogen sulfide (H2S) molecules arise from: Group of answer choices a) disulfide linkages b) dipole-dipole forces c) hydrogen bonding d) London dispersion forces.

Explain Charles law

An atom changes its oxidation number from + 3 to - 1. Is it oxidized, reduced, or neither?

Water's heat of vaporization is 2,257 joules/gram. How much energy is released when 11.2 grams of water vapor condenses into liquid?

What is the purpose of the cobalt blue glass?

The reaction A (g) ⇌ 2 B (g) A (g) ⇌ 2 B (g) has an equilibrium constant of K = 0.010 K = 0.010. What is the equilibrium constant for the reaction B (g) ⇌ 1 2 A (g) ?

A 0.239 gram sample of a gas in a 100-mL flask exerts a pressure of 603 mm Hg at 14 degrees Celsius. What is the gas?

Which of the following is true about a redox reaction? In a redox reaction, an electron is lost by the reducing agent. In a redox reaction an electron is lost by the oxidizing agent.

Is the equation above balanced? How do you know? Mg + 2HCl → MgCl2 + H2

What characteristics do atoms of carbon-12, carbon-13, and carbon-14 have in common?