Answer: (2) releases 2260 J/g of heat energy
Explanation:
Latent heat of vaporization is the amount of heat required to convert 1 mole of liquid to gas at atmospheric pressure.
Latent heat of condensation is energy released when 1 mole of vapor condenses to form liquid droplets.
The temperature does not change during this process, so heat released goes into changing the state of the substance, thus it is called latent which means hidden. The energy released in this process is same in magnitude as latent heat of vaporization. The heat of condensation of water vapour is about 2,260 J/g.
Answer:
Change in enthalpy for the reaction is -536 kJ
Explanation:
- Overall chemical reaction can be represented a summation of two given elementary steps with slight modification.
- Take reaction (1a) and divide stoichiometric coefficients by 2
- Take reverse reaction (2a) and divide stoichiometric coefficient by 2
- Then add these two modified elementary steps to get overall chemical reaction
- is an additive property. hence value of will be changed in accordance with modification
--------------------------------------------------------------------------------------------------------------
Answer:An endothermic reaction
Explanation: In an endothermic reaction, it takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed. In an endothermic reaction, the temperature goes down.
Answer:
B. F⁻
Explanation:
Which anion would bond with K⁺ in a 1:1 ratio to form a neutral ionic compound?
Select the correct answer below:
A. O²⁻. NO. K⁺ and O²⁻ form K₂O in a 2:1 molar ratio.
B. F⁻. YES. K⁺ and F⁻ form KF in a 1:1 molar ratio.
C. N³⁻
. NO. K⁺ and N³⁻ form K₃N in a 3:1 molar ratio.
D. S²⁻. NO. K⁺ and S²⁻ form K₂S in a 2:1 molar ratio.
Answer:
Two electrons fit in the first shell out from the nucleus and eight fit in the second. Every element with more protons than the two of Helium needs to work on shells outside the first one. one you get to ten, you have filled the first two shells.
In a water molecule, oxygen forms one covalent bond with EACH of TWO hydrogen atoms. As a result, the oxygen atom has a stable arrangement of 8 valence electrons. Each hydrogen atom forms only one bond because it needs only two electrons to be stable.