Using definitions, explain how the following terms are related to each other: joule per second, watt, kilowatt, horsepower.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

The sum of the oxidation numbers in a neutral compound is always

Use the de broglie's wave equation to find the wavelength of an electron moving at 4.5 × 106 m/s. show your work. note: h= plank's constant (6.62607 x 10-34 j s)