122 moles of Methane to liters is 2734.5
Answer:
The molecules or ions in a solution can freely intermingle.
Explanation:
The reactant molecules and ions can move freely in solution, so thy are more likely to collide with each other and form products.
A is wrong. Solutions are homogeneous.
B and C are wrong. The statements are correct, but they are not the reason why reactions are carried out in solution.
D is wrong. Chemical reactions do not always produce a colour change.
F is wrong. Some chemicals react with water, so other (often flammable) solvents must be used.
Answer: C) The mass stays constant as it changed from a liquid to a gas
Explanation: Mass stays constant, it's never destroyed or created. It follows the law of conservation of mass.
N(Cu)=m(Cu)/M(Cu)
n(H₂O)=4n(Cu)/3
n(H₂O)=4m(Cu)/{3M(Cu)}
n(H₂O)=4*98.6g/{3*63.5g/mol}=2.0703≈2.1 mol
n(H₂O)=2.1 mol
Van der Waals forces include attractive forces arising from interactions between the partial electric charges and repulsive forces arising from the Pauli exclusion principle and the exclusion of electrons in overlapping orbitals.