True/False 1,atoms combines to form element 2, a physical changes is a change in the composition of as substance 3, physical properties are used as a basis for identifying substance 4, a symbol stands for one atom of an element?

Word equation for k+ h2o yield koh + h2

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m