Which statement best describes the process of alpha decay? (1 point) An unstable nucleus releases a particle containing two protons and two neutrons.

An unstable nucleus releases an electron.

An unstable nucleus rearranges its particles and releases energy.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2