What is the percent by mass of sodium in Na2SOA? Use % Element
total mass of element in compound/
molar mass of compound
x 100

16.18%
22.58%
32.37%
45.98%

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above