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

your picture is not part of the scientific method.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.