Write a balanced equation for the combination reaction described, using the smallest possible integer coefficients. When carbon monoxide combines with oxygen , carbon dioxide is formed.

2 CO(g) + O₂(g) → 2 CO₂(g)

Explanation:

Let's consider the combination reaction between carbon monoxide and oxygen to form carbon dioxide.

CO(g) + O₂(g) → CO₂(g)

We have an odd number of atoms of C on each side, so we multiply CO(g) and CO₂(g) by 2.

2 CO(g) + O₂(g) → 2 CO₂(g)

Now, the equation is balanced.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

the answer is a and have a great day