2) A lab tech makes 150.0 mL of 0.175 M HCl in a flask.
a) How many moles of HCl are there in this solution?
b) How many (not moles but actual Cl- particles) Clions are there in the flask (not moles but actual
Cl particles)?

A. 0.02625mole

B. 6.02x10^23 ions

Explanation:

A. The following were obtained from the question:

Volume = 150mL = 150/1000 = 0.15L

Molarity = 0.175M

Mole =?

Molarity = mole / Volume

Mole = Molarity x Volume

Mole = 0.175 x 0.15

Mole = 0.02625mole

B. Avogadro's hypothesis suggest that 1mole of any substance contains 6.02x10^23 molecules, atoms or ions. This implies that 1mole HCl contains 6.02x10^23 molecules.

The dissociation of HCl is given below:

HCl <==> H+ + Cl-

From the equation,

1 mole of HCl contains 1 mole of Cl-

ion and Avogadro's hypothesis suggests that 1mole of any substance contains 6.02x10^23 molecules, atoms or ions. Therefore 1mole of Cl- contains 6.02x10^23 ions.

This means that there are 6.02x10^23 ions of Cl in HCl

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

c. is the answer

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