It's in the periodic table.
See the attached picture. The number below 'Zn' is the molar mass. The closest answer choice is 65.38
See the attached picture. The number below 'Zn' is the molar mass. The closest answer choice is 65.38
23 Which term is defined as the difference between the potential energy of the products and the potential energy of the reactant
2 answers:
Answer: (4) heat of reaction
Explanation:
1) Activation energy is defined as the extra energy required by the reactants to cross the energy barrier in order to get converted to products.
2) Heat of fusion is the the heat required to convert 1 mole of the solid into liquid state at constant pressure.
3) Thermal energy is the energy possessed by an object by virtue of its temperature.
4) Heat of reaction is defined as the difference between the potential energy of the products and the potential energy of the reactants in a chemical reaction.
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Answer:
Vapor pressure of water = 23.14torr
Explanation:
When you made a solution, vapor pressure decreases following Raoult's law:
<em>Where P is vapor pressure and X mole fraction</em>
As vapor pressure of water is 23.77torr we must find the mole fraction of water knowing the solution is 1.500m glucose (That is 1.500 moles of glucose per kg of water = 1000g of water).
1000g of H₂O are, in moles (Molar mass: 18.02g/mol):
1000g H₂O ₓ (1mole / 18.02g) = 55.5 moles of H₂O.
As we know now the solution contains 55.5 moles of water and 1.5 moles of glucose. Thus, mole fraction of water (Solvent) is:
Replacing in Raoult's law, pressure of water above the solution is: