2 years ago

How many molecular does 36.0 grams of water represent?

Chemistry

1 answer:

rewona [7]2 years ago

4 0

Answer: <span>1.20 x 10^24 molecules

Hope this helps!</span>

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Solid calcium carbide, CaC2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, C2H2. Express

Lina20 [59]

Answer: $CaC_2(s)+H_2O(l)\rightarrow Ca(OH)_2(aq)+C_2H_2(g)$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The solutions in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas. Liquids are represented by (l) and gases are represented by (g).

The balanced chemical reaction is:

$CaC_2(s)+2H_2O(l)\rightarrow Ca(OH)_2(aq)+C_2H_2(g)$