How many molecules of c2h4cl2 can be prepared from 15 c2h4 molecules and 8cl2 molecules?

8 molecules of C₂H₄Cl₂

Explanation:

Molecules of C₂H₄ = 15 molecule

Molecules of Cl₂ = 8 molecules

Molecules of C₂H₄Cl₂ =?

First of all we will write the balance chemical equation,

C₂H₄ + Cl₂ → C₂H₄Cl₂

we are given 8 molecules of Cl₂ and 15 molecules of  C₂H₄, which means that 8 molecules of chlorine react with 8 molecules of C₂H₄ and will limit the reaction product. The seven molecules of C₂H₄ will remain unreactive. So , the chlorine will be the limiting reactant.

8 molecules of Cl₂ × 1 mole of C₂H₄Cl₂/ 1 mole of Cl₂

8 molecules of C₂H₄Cl₂

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.