Chemists call the energy to get a reaction started the

An atom of tin has an atomic number of 50 and a mass number of 119 how many protons neutrons and electrons does this atom have

Why do gases diffuse faster than liquids? Gas particles have more kinetic energy a liquid does not have as many particles liquids have less volume to diffuse through liquids have more pressure to overcome when diffusing

How many neutrons and protons does a neutral atom of sodium with an atomic mass number of 23 have? A. 22 neutrons; 11 protons B. 23 neutrons; 11 protons C. 11 neutrons; 11 protons D. 12 neutrons; 11 protons

Which of these best explains why the hydrogen atoms in a water molecule are attracted to Cl - ions in sodium chloride (NaCl) ? A. The hydrogen atoms have + 1 charges. B. The hydrogen atoms share electrons equally with the oxygen atom. C.

How many atoms of oxygen are represented in 3Fe (NO3) 2?

An atom of aluminum has an atomic number of 13 and a mass number of 27. How many neutrons does it have?

How many moles are in 3.4 x 10-7 grams of silicon dioxide?

Describe how electrons are shared in each type of bond. write equally or unequally

Mass defect is associated with: A. nuclear fusion B. nuclear fission C. radioactive decay D. mass lost by nuclear collisions

How to separate a mixture of iron dust and zinc dust