How fast must a 141. 5−g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with λ = 91. 0 pm? Enter your answer in scientific notation.

c is the answer because when something is left after something evaporates that shows the chemical change.

im not exactly sure but i think its b!

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.