According to the periodic table, how many electrons does nitrogen (#7) have in its valence level?

Suppose that you are a color chemist and have been asked to intensify the color of a dye without changing the type of compound and that the dye in question is a polyene.

What properties would have caused early researchers to name hydrogen "inflammable air"

What is the definition of unsaturated?

In terms of energy and entropy, systems in nature tend to undergo changes toward (1) higher energy and higher entropy (2) higher energy and lower entropy (3) lower energy and higher entropy (4) lower energy and lower entropy

How do you find the average atomic mass?

The conversion of chemical energy to mechanical energy is best described by which example? A. sunlight warming the ground B. electricity boiling water C. fuel being combusted to power a rocket

he density of solid aluminum is 2.70. If a 1g peice of aluminum is dropped in a cup of water, it will sink to the bottomfloat to the tophover in the middle. (The density of water is 1.0

Match the action to the effect on the equilibrium position for the reaction N2 (g) + 3H2 (g) ⇌ 2NH3 (g). Match Term Definition Increasing the pressure A) Shift to the left Removing hydrogen gas B) No effect Adding a catalyst C) Shift to the right

The number of electrons in a neutral atom of hydrogen (H) atom is

What is buffer solution?