Explanation: Molality = number of moles of solute / kg of solvent
1- getting moles of solute: number of moles = mass / molar mass we have: mass = 373.5 g molar mass = 331.2 g/mol Therefore: number of moles = 373.5 / 331.2 = 1.128 moles
2- getting kg of solvent: mass in kg = mass in grams * 10⁻³ mass in kg = 2 * 10³ * 10⁻³ mass in kg = 2 kg
3- getting molality: Molality = number of moles of solute / kg of solvent Molality = 1.128 / 2 Molalty = 0.564 m
Activation energy is the minimum amount of energy needed to start a chemical reaction
A Catalyst is a material that increases the rate of a reaction by lowering the activation energy. In other words, a catalyst act to provide an alternative route for the reaction which has a lower activation energy.
The law of conservation of mass applies to every reaction. In this case, you start with 1 Mg, 2 H, and 2CL and end up with the same five only their bonds have been rearranged, or in other words, they are joined up differently.
