An electric bell is kept under a bell jar in which a vacuum has been created. Slowly air is introduced in to the jar. What will happen to the sound of the electric bell?

Which neutral element has the following electron configuration? 1 s^2 2s^2 2 p^6 3 s^2 3 p^41s 2 2s 2 2p 6 3s 2 3p 4

Lithium and oxygen react to form lithium oxide. What is the balanced equation for this reaction?

Which state of matter has a definite shape and volume

Electronegativity tends to tends to increase from left to right across a row., becasue

Which of the following is a way that carbon dioxide emissions can be reduced? A. Conserving species that are in danger of extinction. B. Planting more trees to soak up carbon dioxide. C. Generating electricity from coal sources instead of oil. D.

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

What is the nuclear charge of an alpha particle?