What is unchanged when a solution is diluted by the addition of solvent?

The moles of solute

Explanation:

When you make a dilution, moles of solute does not change when you add solvent.

In concentrated solution, you have x moles of solute, that will be the same in the diluted solution.

Relation between molarity or volume of concentrated and diluted solutions is called, "dilution factor".

When you calculate the dilution factor: you use this formula

Molarity concentrated .  Concentrated volume = M diluted . Diluted volume

M concentrated / M Diluted = Diluted volume / Concentrated volume

did you find the answer?

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them