Express the sum of 7.68 m and 5.0 m using the correct number of significant digits. A)13m B)10m C)12.68m D)12.7m

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

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons