John uses a balance to determine the mass of a rock is 6.5 grams. A graduated bottle contains 10.0 milliliters of water. When the rock is carefully lowered into the graduated bottle and is completely covered with water the volume of the water containing the marble has increased to 12.2 milliliters. Find the density of the rock. (round to the nearest tenth if necessary)

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

the answer is definitely c.

answer; natural resources;