A change in the number of neutrons in an atom will change an isotope. What will happen when the number of protons changes in an atom?

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

How do scientists think that gravity affected the formation of our solar system?