Two atoms of element A unite to form a molecule with the formula A2. The bond between the atoms in the molecule is

1) electrovalent

2) ionic

3) nonpolar covalent

4) polar cavalent

Why does the equilibrium of a system shift when the pressure is increased? To maximize the stress on the system To stop restoring equilibrium to the system To increase the total moles of gas in the system To decrease the total moles of gas in the

For which of the following is heat energy absorbed? Deposition Condensation Sublimation Freezing

Which one is a balanced equation?

Most of Uranus's atmosphere is composed of

What is transition metals oxidation state?

What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Which of the following is true about compounds

According to the chart, which substance has the lowest OH' concentration? A) urine lemon juice tomato juice D) black coffee

23 Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell? (1) oxidation (3) neutralization (2) reduction (4) transmutation

Which of the following is true? A) Gas atoms subjected to electricity emit bright lines of light. B) Gas atoms absorb white and emit a continuous spectrum of light. C) Gas atoms under high pressure emit dark lines against a continuous spectrum.