Discovered that there were other galaxies besides the milky way.
a. edwin hubble
b. albert einstein
c. galilei galileo
d. sir isaac newton

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

What is the role of lenses in microscopy?

From the perspective of an employee that effective channeling of work related information and concerns