2.478 g of white phosphorus was used to make phosphine according to the equation: P₄(s) + 3OH⁻(aq) + 3H₂O(l) → PH₃(g) + 3H₂PO₂⁻(aq) Calculate the amount, in mol, of white phosphorus

The amount of white phosphorus is 0.0199 moles

Explanation:

To calculate the number of moles, we use the equation:

We are given:

Given mass of white phosphorus = 2.478 g

Molar mass of white phosphorus = 124 g/mol

Putting values in above equation, we get:

Hence, the amount of white phosphorus is 0.0199 moles

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.