How could the AX3 molecular structure (one central atom with three bonded atoms) be non-polar even with bond dipoles present? options:

1. If there were no lone pairs on the central atom

2. If there were one lone pair on the central atom

3. If there were two lone pairs on the central atom

4. If there were three lone pairs on the central atom

When the mercury level in a barometer decreases that atmospheric pressure has

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

How many atoms are in 2 moles of phosphorus?