Sodium atom has lower electron affinity than chlorine atom why?

What prefix is used to indicate that the main chain of a hydrocarbon contains four carbon atoms?

When an electron moves from a lower to a higher energy level does the electron gain or lose Quantum of energy

The constellations seem to move as the seasons on Earth change. What causes this?

2. What is the frequency of a 6.9 x 10-13 m wave? . co

What particles make up the nucleus

What is the difference between pure substance, element, and compund

Butane gas is used as the fuel in disposable lighters. It burn in oxygen to form carbon dioxide gas and water vapor. What mass of carbon dioxide is produced when 53.3 g of butane is burned in 103.9 g of oxygen

Suppose a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was diluted by placing 1.00 mL of the concentrated solution in 4.00 mL of water.

What kinds of scientific investagations involve making observations

According to the kinetic molecular theory, when a gas particle hits something what will happen?