Answer:
1.175 M
Explanation:
Mass = 32.9 g
Volume = 700.0 mL = 0.7 L
Molarity = ?
The relationship between the quantities is given by;
Molarity = Number of moles / Volume
Number pf moles = Mass /Molar mass
Number of moles = 32.9 / 40 = 0.8225 mol
Molarity = 0.8225 / 0.7 = 1.175 M
Answer:
92.46 g
Explanation:
The reaction is
I = Current = 19.5 A
t = 4 hours =
F = Faraday constant = 96485.33 C/mol
Molar mass of copper = 63.546 g/mol
Charge is given by
Moles of electrons is given by
Moles of copper is
Mass of copper would be
The mass of copper electroplated is 92.46 g.
The correct option is D.
An endothermic reaction is a type of reaction that absorb energy from the environment, thus, the energy level of the product is always higher than that of the reactants. During endothermic phase change, the potential energy of the system always increases while the kinetic energy of the system remains constant. The potential energy of the reaction increases because energy is been added to the system from the external environment.
Answer:
The chemical symbol is always a single letter. The chemical symbol always starts with the same letter as the name of the element. The chemical symbol always begins with a capital letter. The chemical symbol can be shared by more than one element.
Explanation: