What is the concentration (in M) of a 2.7 M solution that is diluted from 25.2 mL to 500.0 mL ?

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

In 2002, the rare earth elements mine in mountain pass, california was closed because