Question

A student found that the weight of the naphthalene collected was less than the weight determined by difference. what would account for the smaller amount of naphthalene collected?

Answer 1

The main reasons for the smaller amount of naphthalene collected are as follows:

1. In the heating process some naphthalene escaped.

2. Some amount of naphthalene lost during procedure like transfer or weighting  

Answer 2

Answer:

Because of naphthalene's volatility

Explanation:

Naphthalene is very volatile, meaning that a small quantity of it will change to gas state and because of this the two meditions are different.

Due to this phenomenom:

$w_{determined} = w_{collected} + w_{volatilized}$