A chemistry student needs 65.0g heptane for an experiment. He has available 20.0g of a 38.1% w/w solution of heptane in chloroform. Calculate the mass of solution the student should use.

The question is incomplete, here is the complete question:

A chemistry student needs 65.0 g heptane for an experiment. He has available 20.0 g of a 38.1% w/w solution of heptane in chloroform.

Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button.  Round your answer to 3 significant digits.

The solution is not enough, "No Solution"

Explanation:

We are given:

Mass of solution needed = 20.0 g

38.1 % (w/w) solution of heptane

This means that 38.1 grams of heptane is present in 100 grams of solution

Applying unitary method:

If 38.1 grams of heptane is present in 100 g of solution

So, 65.0 grams of heptane will be present in = of solution

As, the given amount of solution is less than the required solution. So, there is not enough solution

Hence, the solution is not enough, "No Solution"

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.