The given question is incomplete. The complete question is :
Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of carbon dioxide and argon. The partial pressure of carbon dioxide is 0.080 atm and the partial pressure of argon is 0.24 atm. What is the total pressure of the mixture.
Answer: 0.32 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
Given : 
=total pressure of gases = ?
= partial pressure of carbon dioxide = 0.080 atm
= partial pressure of argon = 0.24 atm
putting in the values we get:
Thus the total pressure of the gases is 0.32 atm
Loschmidt's constant is referred to as Avogadro's number (they are the same). Their values are 6.02 times 10 to the -34 power.
The second one should be correct
2. 0.05733 mol CuCl2 (1 mol Cu(OH)2 / 1 mol CuCl2) = 0.05733 mol Cu(OH)2 <-- It's the same because there's a 1:1 ratio between the reactant and the product.
Polar compounds can dissolve in polar substances and Will not dissolve in non polar substances and same non polar substances will dissolve only in non polarsubstances .
e.g. Sodium chloride is a polar compound that'll dissolve in water ( polar solvent) and the same substance(NaCl) won't dissolve in cyclohexane ( A non polar solvent)
