A reaction occurs between two gases when they are mixed. Which is the most likely effect on reaction rate if the gases are mixed at the same temperature but at higher pressure? 1. Reaction rate increases because the molecules collide more often.
2. Reaction rate increases because the molecules collide with more force.
3. Reaction rate decreases because the molecules have less room to move.
4. Reaction rate stays the same because the molecules move at the same speed.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which statement best explains the relationship between an area is geography and the temperature of its surface water

What was bohr’s contribution to the planetary model