Answer:
<u>1.0 M</u> of KCl
Explanation:
First off, we're given 6.0 g of KCl. From here, we just find the molar mass of KCl by adding the molar masses of each element in the compound. The molar mass for the potassium is 39 g/mol, and the chlorine is 34 g/mol (all found on periodic table). We add those to find the compounds molar mass, which turns out to be 73 grams/ mole.
From here, we need to convert grams to moles so we multiply the grams by the molar mass so that we cancel out grams and only leave behind moles ( 6.0 grams x 1 mole/73 grams ≈ <u>0.08 moles</u>).
From here, we need to find the amount of liters in the solution, considering that the Molarity (M) is the same equation as mol/ Liter. To find this, we must convert similar units so that they work, in this case, we must convert milliliters to liters. We know that 1000 milliliters are equal to 1 liter, therefore like what we did with the molar mass and grams, we must cancel out milliliter so we only have liters ( 80 mL x 1 L / 1000 mL= <u>0.08 L</u>)
From here, we divide the moles by the liters in order to make the molarity. The reason why is because as said before, M is equal to mol/L
(0.08 moles / 0.08 L = 1.0 M)
I hope this helped you and good luck with your semester in Chemistry!
