A 250.0 mL solution contains 4.6 g

copper

(II) chloride, CuCl2. Find the molarity of this

solution.

THE MOLARITY OF THE SOLUTION IS 0.1368 mol/dm3

Explanation:

Molarity is the number of moles of the solute per litre of the solution.

It is expressed as;

Molarity in mol/dm3 = Molarity in g/dm3 / Relative molecular mass

Step 1: obtain the molarity in g/dm3

4.6 g of CuCl2 in 250 mL solution

4.6 / 250 * 10^-3

= 4.6 / 0.25

= 18.4 g/dm3 of CuCl2

Step 2: calculate the relative molecular mass of CuCl2

( Cu = 63.5  , Cl = 35.5)

RMM = 63.5 + 35.5 *2

= 63.5 + 71

= 134.5 g /mol

Step 3: Calcullate molarity in mol/dm3

Molarity in mol/dm3 = molarity in g/dm3 / RMM

= 18.4 g/dm3 / 134.5 g/mol

= 0.1368 mol/dm3

So therefore, the molarity of CuCl2 is 0.1368 mol/dm3

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.