Identify the limiting reactant when 1.78 gram of oxygen reacts with 2.16 grams of hydrogen to produce water.

oxygen is limiting reactant.

Explanation:

Given data:

Mass of oxygen = 1.78 g

Mas of hydrogen = 2.16 g

Limiting reactant = ?

Solution:

Chemical equation:

2H₂ + O₂  →  2H₂O

Number of moles of oxygen:

Number of moles = mass/ molar mass

Number of moles = 1.78 g / 32 g/mol

Number of moles = 0.06 mol

Number of moles of hydrogen:

Number of moles = mass/ molar mass

Number of moles = 2.16 g / 2 g/mol

Number of moles = 1.08 mol

No we will compare the moles of oxygen and hydrogen with water.

                 O₂          :          H₂O

                  1            :             2

                0.06        :           2×0.06 = 0.12 mol

                 H₂            :           H₂O

                  2             :             2

                  1.08         :           1.08

Number of moles of water produced by oxygen are less so oxygen will be limiting reactant.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .