What mass of aluminum metal would absorb 250.0 Joules when it melted at its melting point? The heat of fusion for aluminum is 396.6 J/g.

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Why do cells appear different in distilled water than they do in 10% salt water?