According to this balanced chemical equation, what volume of C2H2 is required to form 40.0L

of CO2?

2C2H2(g) + 502(g) → 2H2O(g) + 4CO2(g)

A. 20.0L

B. 44.8L

C. 80.0L

D. 100 L

A. 20.0L

Explanation:

According to avogadro's law, equal moles of all gases occupy equal volumes at STP.

The given balanced equation is:

According to stoichiometry :

4 L of is formed by = 2 L of

Thus 40.0 L  of is formed by = of

Thus 20.0 L of is required to form 40.0L  of

the answer is the

- 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