Azurite, 2 CuCO3 * Cu(OH)2 is blue and malachite, CuCO3 * Cu(OH)2 is green. Which contains the higher percentage of copper? Each formula represents a single molecule of the substance. The * means they are bonded together as one.

Malachite green has highest percentage of copper.

Explanation:

Azurite:

Molar mass of Azurite = M = 344.67 g/mol

Atomic mass of copper = 63.55 g/mol

Percentage of copper in Azurite :

The percentage of copper in an azurite is 55.31%.

Malachite:

Molar mass of Malachite = M = 221.12 g/mol

Atomic mass of copper = 63.55 g/mol

Percentage of copper in Malachite:

The percentage of copper in an malachite is 57.48%.

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.