An atom has 20 protons, 26 neutrons, and 20 electrons. what could be the atomic mass of this atom?

Which element is more electronegative, sulfur or nitrogen?

Which statement about activation energy is true? a. It is not affected by catalysts. b. It has no effect on the rate of the reaction. c. It is the energy required to break existing chemical bonds. d. It is the same for all reactants.

Why is the half-life of a radioisotope important for radioactive dating?

What are the significant numbers 5 700.050

Why is it important to use good procedure writing and keep detailed notes during an experiment in Science?

What is earths water called

What volume of product is produced when 20.0 Mg of liquid hydrogen reacts with excess liquid oxygen in a rocket propellant reaction? Gas is formed 101.3 to 5 kPa and 40.0 °C

Where the use of energy is concerned (in scientific sense), when is work done?

Which two objects would experience the greatest gravitational force between them?

Does a solution have to involve a liquid? explain.