What is true of a synthesis reaction?

Based on the equation and the information in the table, what is the enthalpy of the reaction?

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li