The definition of solubility is the maximum quantity of solute that can dissolve in a certain quantity of solvent or quantity of solution at a specified temperature or pressure (in the case of gaseous solutes). For Gases, solubility decreases as temperature increases (duh...you have seen water boil, right?) The physical reason for this is that when most gases dissolve in solution, the process is exothermic. This means that heat is released as the gas dissolves. This is very similar to the reason that vapor pressure increases with temperature. Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution. Do you need any more?
b. both hydrogen atoms
c. the oxygen atom
d. There is no difference in the electronegativities of the atoms in a water molecule.
The oxygen atom in a water molecule has the greatest electronegativity. Therefore, the correct option is option C.
The tendency of an atom of a particular chemical element could attract shared electrons while forming a chemical bond is represented by the symbol. The electronegativity of an atom is determined both by its atomic number as well as the distance between its valence electrons and the charged nucleus.
The higher the related electronegativity, the more electrons an atom or substituent group attracts. Electronegativity is a simple approach to quantify bond energy as well as the sign and degree of a bond's molecular polarity, that describes a bond all along continuum between covalent through ionic bonding. The oxygen atom in a water molecule has the greatest electronegativity.
Therefore, the correct option is option C.
To learn more about electronegativity, here:
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Answer:
The Oxygen Atom
Explanation:
Hey there. I did not build a model for you. Below is a picture of a Plant Cell that you could get some ideas from.
Best Of Luck,
- Ari -
A plant cell is a type of cell found in green plants that is responsible for photosynthesis. It contains a cell wall, chloroplasts, and a central vacuole, which distinguish it from animal cells. Plant cells also include plastids and typically do not have lysosomes or centrosomes.
A plant cell is a type of cell found in green plants that is responsible for performing photosynthesis. It contains various elements that distinguish it from animal cells. Major components include:
Unlike animal cells, plant cells also contain plastids and do not usually have lysosomes or centrosomes.
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Answer:
there are two types of nomenclature used in organic system. the most widely used and universally accepted system of nomenclature is the IUPAC system of nomenclature. some compounds are referred to by their common name that existed before the IUPAC system or is more widely known than the IUPAC names.
Explanation:
IUPAC ( international union of pure and applied chemistry) system of nomenclature is used to name compounds in organic system. there are some principles to be followed while using this nomenclature. some of them are:-
1) identification of parent chain is the first step. the longest hydrocarbon chain is the parent chain.
2) identification of all the substituent groups of the parent chain is also required.
3) hydrocarbon cyclic ring has a fixed prefix and that is cyclo.
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
The value of ΔH will be 249.75 KJ.
To obtain the reaction :
PCl5(g) → PCl3(g) + Cl2(g)
We have to add the given reactions and then divide it by 4.
(i) adding the reactions
P4(s) + 6Cl2(g) → 4PCl3(g) ΔH = -2439 kJ
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
we get:
4PCl5(g) → 4PCl3(g) + 4Cl2(g), ΔH = 3438 - 2439
(ii) dviding by 4
PCl5(g) → PCl3(g) + Cl2(g) , ΔH = (3438 - 2439)/4
ΔH = 249.75 kJ is the required enthapy.
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Answer:
The value of for the desired reaction will be 249.75 KJ.
Explanation:
The desired reaction is shown below
The desired reaction can be obtained by adding the given reactions and then dividing both sides by 4.
Net Enthalpy change for the desired reaction
nitrogen-15
B.
nitrogen-8
C.
nitrogen-7
D.
nitrogen-1
D nitrogen-1 because you divide the two numbers to get what left of the nitrogen