An atomic theory is a model developed to explain the properties and behaviors of atoms. as with any scientific theory, atomic
theory is based on scientific evidence available at any given time and is subject to change. the development of atomic theory was
contingent on research that discovered and described the subatomic particles. one early model was critical in predicting that the
positive area of an atom was a small, dense location. which model was the first to suggests this?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Convert .347 kilometers to miles show your work

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.