How many grams of potassium chloride are produced from 2.70 g of
potassium?

5.53 grams

Explanation:

How many grams of potassium chloride are produced from 2.70 g of

potassium?

Potassium chloride = KCl Molar mass: 74.54 g/mol

Potassium = K = 1+ charge = 39.09g/mol

Cl = 1- charge = 35.45

If we only have Potassium well no grams of potassium chloride are produced as we have no chlorine.

If we have some chlorine as well though then

2K + Cl2 = 2KCl

2:1 :2

So same number of moles of K and KCl

2.7grams of K so 2.7g/39.09g/mol = 0.07419 moles

What's the weight of 0.07419 moles of KCl?

0.07419 x 74.54 = 5.53 grams

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.