5. The number of moles of molecules in a 12.0-gram sample of Cl2 is A) 12.0 moles
B) 12.0 x 35.5 moles
C) 12.0/71.0 mole
D) 12.0/35.5 mole

Considering the definition of molar mass, the number of moles of molecules in a 12 grams sample of Cl₂ is = 0.169 moles.

Molar mass is the mass of one mole of a substance, which can be an element or a compound.

In other words, molar mass is the amount of mass that a substance contains in one mole.

Therefore, knowing the molar mass, the number of moles in a container can be calculated using the expression:

In this case, you have 12 grams sample of Cl₂, whose molar mass is 71 .

So, the number of moles can be calculated as:

Solving:

number of moles= 0.169 moles

Finally, the number of moles of molecules in a 12 grams sample of Cl₂ is = 0.169 moles.

Learn more about molar mass and number of moles:

mole

Explanation:

Given parameters:

Mass  = 12g

Molecule  = Cl₂

Unknown:

Number of moles of molecules  = ?

Solution:

To solve this problem, we use the expression below:

   Number of moles  =  

 molar mass of  Cl₂  = 2 (35.5)  = 71g/mol

 Number of moles  = mole

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

he would use the colour black