Determine the best formula for reacting elements. calcium and iodine a. cal b. cal2 c. ca2l d. ca2l2

Option (B) is the correct answer.

Explanation:

Calcium is a metal and iodine is a non-metal. So, when calcium and iodine combine with each other then calcium will donate its excess of electrons to the iodine atom. Thus, it will form an ionic bond.

When calcium reacts with iodine then it results in the formation of calcium iodide.

The reaction equation will be as follows.

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