5. Sketch the phase diagram of oxygen, O₂, from the following information: normal melting point, -218 °C; normal boiling point, -183 °C; triple point, -219 C, 1.10 mmHg: critical point, -118 °C, 50.1 atm. Label each phase region on the diagram.
Answers
To sketch the phase diagram of oxygen, O₂, we need to plot temperature on the y-axis and pressure on the x-axis. We can use the given information to plot the various regions on the phase diagram.
First, we plot the triple point at -219°C and 1.10 mmHg as a point on the diagram. This point represents the temperature and pressure at which all three phases of oxygen (solid, liquid, and gas) coexist in equilibrium.
Next, we draw the solid phase region of oxygen below the triple point. The solid phase exists at pressures and temperatures below the triple point. We can label this region as "solid" or "Oxygen (s)".
Above the triple point, we can draw the liquid and gas phase regions. The liquid phase exists at temperatures and pressures between the triple point and the critical point, while the gas phase exists at temperatures and pressures above the critical point. We can label these regions as "liquid" or "Oxygen (l)" and "gas" or "Oxygen (g)" respectively.
The critical point, which is the highest temperature and pressure at which a gas can be liquefied by pressure alone, is located at -118°C and 50.1 atm. We can mark this point on the phase diagram and label it as "critical point".
Finally, we can draw a dashed line to represent the vaporization or melting curve of oxygen, which separates the solid and liquid phase regions. The point where this curve intersects the critical point represents the critical temperature and pressure.
Related Questions
when 0.20 mol of naoh is added to 0.50 mol of weak acid hx, in a total volume of 1.00 l, the ph of the resultant solution is 6.10. calculate ka for hx.
Answers
The Ka value for HX is 2.11 x 10-⁵. The reaction between NaOH and HX can be represented as follows: NaOH + HX → NaX + H₂O
Assuming that the weak acid HX is completely dissociated, we can write the following equation for the reaction that occurs:HX + OH- → X- + H₂O
The initial moles of HX is 0.50 mol, and the moles of NaOH added is 0.20 mol. This means that the final concentration of NaOH is 0.20 M, and the final concentration of HX is (0.50 - 0.20) M = 0.30 M. Let x be the concentration of OH- ions that react with HX. Then, the concentration of HX that remains unreacted is (0.30 - x) M, and the concentration of X- ions produced is also x M.
The equilibrium constant expression for the reaction is given by:
Since the pH of the solution is 6.10, we know that [H+] = 10-ᵖᴴ = 10-⁶.¹⁰ M = 7.94 x 10-⁷ M. Substituting the known values into the equilibrium constant expression, we get: Ka = (x)(7.94 x 10-⁷ / (0.30 - x)
To solve for x, we need to use the fact that the moles of OH- ions that react with HX must equal the moles of NaOH added. Therefore: 0.20 mol NaOH = x + (0.30 - x) Solving for x, we get: x = 0.10 mol. Substituting this value back into the equilibrium constant expression, we get: Ka = (0.10)(7.94 x 10-⁷ / (0.30 - 0.10) = 2.11 x 10-⁵
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Match each term below with its definition or description.
1 The point in a titration when the added amount of standard reagent is equal to the amount of analyte being titrated.
2 The analyte is titrated with the standard reagent and the volume of standard solution required to complete the reaction is measured.
3 A reagent that is pure and stable, which can be used directly after weighing.
4 The analyte that is being analyzed in the titration.
5 Standard reagent is added in excess to ensure complete reaction with the analyte. The excess reagent is then titrated with a second standard reagent.
6 A solution, whose concentration is known, often made from a reagent of known purity.
7 The standard reagent of known concentration that is added from a buret to the analyte solution.
8 The analyte does not react directly with the titrant so it is converted to another form which will react with the titrant.
9 The point in a titration when a change in the analyte solution is observed, indicating equivalency.
10 It is added to the analyte solution and aids in the observation of the completion of the reaction.
a) End Point
b) Indicator
c) Direct Titration
d) Back Titration
e) Indirect Titration
f) Primary Standard
g) Standard Solution
h) Titrand
i) Equivalence Point
j) Titrant
Answers
Answer:
1. Equivalence point
2. Direct titration
3. Primary standard
4. Titrand
5. Back titration
6. Standard solution
7. Titrant
8. Indirect titration
9. End point
10. Indicator
Explanation:
1. The equivalence point is the tiration point at which the quantity or moles of the added titrant is sufficient or equal to the quantity or moles of the analyte for the neutralization of the solution of the analyte.
2. Direct titration is a method of quantitatively determining the contents of a substance
3. A primary standard is an easily weigh-able representative of the mount of moles contained in a substance
4. A titrand is the substance of unknown concentration which is to be determined
5. The titration method that uses a given amount of an excess reagent to determine the concentration of an analyte is known as back titration
6. A standard solution is a solution of accurately known concentration
7. A titrant is a solution that has a known concentration and which is titrated unto another solution to determine the concentration of the second solution
8. Indirect titration is the process of performing a titration in athe reverse order
9. The end point is the point at which the indicator indicates that the equivalent quantities of the reagents required for a complete reaction has been added
10 An indicator is a compound used to visually determine the pH of a solution.
The titration has been the neutralization reaction in which the titrand and the titrant react to form the salt and the water and help in the determination of the qualitative and quantitative properties.
What is an Endpoint?In a titration reaction, the endpoint has been the point at which the equivalent amount of reagent has been completely neutralized.The Indicator has been the chemical that changes to indicate the endpoint of the reaction.Direct titration involves the reaction for the quantitative determination of the substances.The back titration can be given as the reaction in which the excess reagent is used to titrate the second standard reagent in the reaction.Indirect titration can be given as the reaction of the analyte to convert to another form and then the analysis with the titrant.The primary standard has been the known concentration of the pure and stable weighing reagent.The standard solution has been the solution of the known concentration in the reaction.Titrand has been the unknown sample that has to be analyzed.The equivalence point is the concentration point at which the quantity of titrant added to the titrand has been equal.Titrant has been the known concentration of sample that has been added to equivalent the unknown sample.Learn more about titration here:
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How much NaNO3 can dissolve at 70°C in 100g of water?
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HELP ME ASAP!
what is the purpose of putting cabbage water, baking soda, and vinegar experinment?
Answers
test for different types of molecules called acids and bases.
16) the volume of a gas with a pressure of 1.2 atm increases from 1.0 l to 4.0 l. what is the final pressure of the gas, assuming no change in amount of gas or temperature? 16) a) 1.2 atm b) 4.8 atm c) 0.30 atm d) 1.0 atm e) 3.3 atm
Answers
The final pressure of the gas is 0.30 atm. Option C is correct.
The relationship between the pressure and volume of a gas is given by Boyle's law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature and amount of gas. Mathematically, this can be written as;
P₁V₁ = P₂V₂
where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume.
Using the given values, we can write;
P₁ = 1.2 atm
V₁ = 1.0 L
V₂ = 4.0 L
Solving for P₂, we get;
P₂ = (P₁V₁)/V₂
P₂ = (1.2 atm x 1.0 L)/4.0 L
P₂ = 0.30 atm
Hence, C. is the correct option.
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Can someone please help me on this
Answers
Answer:
it's none because the graph is decreasing like a milf so that why
1 pt
Vanadium (V) is element 23 on the periodic table. A sample contains 2.88x1022 atoms of V. Calculate the amount of V.
1 pt
x mol V
1 pt
Resubmit
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Answers
What limits the amount of work that a system can do?
Answers
Answer:
The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat. Systems that dissipate less energy as heat will be able to do more work than systems that dissipate more energy as heat.
Explanation:
The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat.
What is entropy?Entropy is also a measure of the number of possible arrangements the atoms in a system can have. In this sense, entropy is a measure of uncertainty or randomness.
The amount of work a system can do is limited by the changes in entropy that occur and cause energy to be dissipated as heat.
Systems that dissipate less energy as heat will be able to do more work than systems that dissipate more energy as heat.
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question 70 52) if one strand of a dna molecule has the sequence of bases 5'-attgca-3', the other complementary strand would have the sequence a) 5-'taacgt-3'. b) 5'-tgcaat-3'. c) 5'-uaacgu-3'. d) 3'-uaacgu-5'.
Answers
If one strand of a DNA molecule has the sequence of bases 5'-ATTGCA-3', the other complementary strand would have the sequence 5'-TGCAAT-3'.
The complementary strand of DNA would have the sequence 5'-TGCAAT-3' if one strand of a DNA molecule has the sequence of bases 5'-ATTGCA-3'.There are a number of rules governing which bases pair with each other. In DNA, Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C).
Therefore, because A and T pair together and G and C pair together, the complementary strand can be found by simply switching out A for T and G for C or vice versa.
The base-pairing rules also imply that the 5' end of one strand is complementary to the 3' end of the other strand and vice versa. The correct complementary sequence to 5'-ATTGCA-3' would thus be 5'-TGCAAT-3'.
Therefore, option B) 5'-TGCAAT-3' is the right answer.
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What causes tectonic plates to move slowly over time?
A. Convection currents in the asthenosphere carry
them.
B. Ocean currents push them in different directions.
C. Winds blow steadily on them in different directions.
D. Volcanoes move them from north to south.
Answers
Answer:
A.
Explanation:
because im smart
Does an electron cause an electromagnetic wave to vibrate
Answers
Yes, an electron cause an electromagnetic wave to vibrate.
What is an electromagnetic wave?One of the waves is propagated by simultaneous periodic variations of electric and magnetic field intensity and that includes radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Electromagnetic waves are produced when something vibrates—an electric charge that moves back and forth.
When an electric charge vibrates, the electric field around it changes. Because the electric charge is in motion, it also has a magnetic field around it.
This magnetic field also changes as the charge vibrates.
Therefore, an electron causes an electromagnetic wave to vibrate.
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a chemistry student needs 85.0 g of dimethyl sulfoxide for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of dimethyl sulfoxide is 1.10 g*cm^-3. calculate the volume of dimethyl sulfoxide the student should pour out. round your answer to significant digits.
Answers
The volume of Dimethyl sulfoxide the student should pour out is, 77.27ml
Since the 1960s, dimethyl sulfoxide (DMSO) has been used in humans for medical treatment and as a pharmacological agent. DMSO is now primarily used in the cryopreservation of stem cells, the treatment of interstitial cystitis, and as a penetrating vehicle for various drugs.
Dimethyl sulfoxide has a density of 1.10 g/103L, or 1.10 g/mL.
Now we develop the following argument:
If a volume of 1 mL is contained in 1.10 g of dimethyl sulfoxide
The volume of 85 g of dimethyl sulfoxide is then X mL.
Dimethyl sulfoxide: X = (85X1) / 1.10= 77.27ml
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Need Help!!
Explain the relationship between volume and temperature (Charles’ Law)
Answers
Answer:
the volume of a give gas simple is directly propotional assolute temperature at constant pressure .the volume of a gavi. amount of gass is inversely propotional ot Its pressure when temperature is help constant
which is a unique characteristic of the bonding between metal atoms?
Answers
is standing considered work? explain your answer why.
Answers
Answer:
yes because my mom has a job and she has to stand and put stuff on a bag during her work time
Explanation:
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Which one is a single replacement reaction? (Whoever gets it correct first I’ll mark)
Answers
The equation that represents a single replacement reaction given the various options is 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)
What is a single replacement reaction?A single replacement reaction, also known as single displacement reaction is a reaction in which elements higher in the electro-chemical series displace or replace elements lower in the electro-chemical series displace from a solution.
The following example illustrates single replacement reaction:
A + BC -> AC + B
From the above reaction, we can see that A has replace/displace B to from AC.
With the above information, we can determine the equation that represents single replacement reaction. Details below:
Equation from the questions:
2Al + 3Cl₂ -> 2AlCl₃2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g)2AlCl₃(aq) -> 2Al + 3Cl₂ AlCl₃ + 3KOH -> Al(OH)₃ + 3KClFrom the above, we can see that only 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) conform to single replacement reaction.
Thus, the correct answer to the question is: 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)
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Ethanolic fermentation is used in making beverages such as beer, wine, and pulque. It is carried out by yeast and ...
A) clostridium.
B) zymomonas.
C) leuconostoc.
D) lactobacillus.
E) propionibacterium.
Answers
Ethanolic fermentation, which is the process of converting sugars into ethanol and carbon dioxide by yeast, is primarily carried out by the yeast species known as zymogens. The correct answer is (B).
Zymomonas species are well-known for their ability to ferment sugars and produce ethanol. They are commonly used in the production of various alcoholic beverages, including beer, wine, and pulque. Option (A) clostridium, (C) leuconostoc, (D) lactobacillus, and (E) propionibacterium are not typically associated with ethanolic fermentation. Each of these microorganisms has different metabolic pathways and roles in various other fermentation processes, but they are not the main agents involved in ethanolic fermentation for beverage production. Hence the correct answer is (B).
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Please explain your reasoning and give explanation of why you chose that answer
Answers
Answer:
a. Cellular Respiration produces more ATP than Anaerobic Respiration.
Explanation:
Cellular Respiration creates a total of 36-38 ATP per round. Anaerobic processes only produce 2 ATP per cycle.
The process of fractionation is based on which property of the components of a solution?
Answers
The process of fractionation is based on boiling point of the components of a solution.
What will separate out during the fractional distillation process depends on the boiling point of the substance. When the difference between the boiling points of two or more miscible liquids is less than 25 K, it is used to separate the mixture. The boiling point affects fractional distillation. Since different hydrocarbons have different boiling points, fractional distillation can be used to easily purify them.
Therefore, factional distillation makes use of boiling point. Due to the different boiling points of the various liquids, fractional distillation is effective. Vapors rise through a column that is hot at the bottom and cooler at the top when the mixture is heated.
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a 77.9 g chunk of metal initially at 75.0oc warms 224 g of water at 15.0oc to 17.5oc. which metal was added to the water?
Answers
c.aluminium .The metal that was introduced to the water was aluminium since its specific heat value corresponds to that of the metal.
Determining the metal's specific heat is necessary.The amount of energy needed to raise the temperature of one unit of mass of a substance by one degree is measured as the specific heat of that substance. The metal's specific heat can be calculated using the calculation shown below:
\(q = m * c * (T2 - T1)\)
Where:
where q is the quantity of heat energy (Joules)
m is the substance's mass (grams)
c = particular heat (Joules per gramme per degree Celsius)
T2 is the final temperature (degrees Celsius)
Initial temperature is T1 (degrees Celsius)
In this instance
\(q = 77.9 g * c * (17.5 - 15.0)q = 224g * 4.184 J/g.C * (17.5 - 15.0)q = 224g * 4.184 J/g.C * 2.5Cq = 1,103 J\)
Therefore,
\(77.9 g * c * (75.0 - 15.0) = 1,103 Jc =\frac{ (1,103 J) } {(77.9 g * (75.0 - 15.0))}c = 0.897 J/g.C\)
The metal that was added to the water was aluminium since this particular temp corresponds to the value for aluminium.
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complete question:77.9 g chunk of metal initially at 75.0oc warms 224 g of water at 15.0oc to 17.5oc. which metal was added to the water?
substance specificheat(J/g.C)
aluminium 0.897
graphite 0.709
rhodium 0.243
titanium 0.523
tungsten 0.132
zinc 0.388
water 4.184
a.graphite
b.titanium
c.aluminium
d.tungsten
A decomposition reaction starts with one reactant and ends up with two or more
products. Which of the following reactions are decomposition reactions?
NaCl --> Na+ Cl2
H2+02 --> H20
NaOH + HCI--> HOH + NaCl
O H2O --> H2 + O2
O Na + Cl2--> NaCl
Answers
Answer:
2H₂O → 2H₂ + O₂
2NaCl → 2Na + Cl₂
Explanation:
2H₂O → 2H₂ + O₂
2NaCl → 2Na + Cl₂
The reactions shown above is a decomposition.
In a decomposition reaction or cracking, two or more products are formed from a single product.
The breakdown of a compound into its components as individual elements or other compounds falls into this category of reactions.
Cracking is a sort of decomposition reactions that is used in petroleum industries to sort the fractions of a compound.
2h2 + 02 = 2h20
what is the volume of steam could be produced at stp if 12.8 g of oxygen reacts with excess hydrogen
Answers
The volume of steam that could be produced at STP if 12.8 g of oxygen reacts with excess hydrogen is 17.92 L
How to determine the volumeWe'll begin by obtaining the mole of steam produced. This can be obtained as follow:
Mass of O₂ = 12.8 gMolar mass of O₂ = 2 × 16 = 32 g/molMole of O₂ = 12.8 / 32 = 0.4 mole2H₂ + O₂ -> 2H₂O
From the balanced equation above,
1 mole O₂ reacted to produce 2 moles of steam, H₂O
Therefore,
0.4 mole O₂ will react to produce = 0.4 × 2 = 0.8 mole of steam, H₂O
Finally, we shall determin the volume as follow:
At standard temperature and pressure (STP),
1 mole of H₂O = 22.4 L
Therefore,
0.8 moles of H₂O = (0.8 mole × 22.4 L) / 1 mole
0.8 moles of H₂O = 17.92 L
Thus, we can conclude that the volume produced is 17.92 L
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if 0.15 mol of NaN3 reacts, what mass of nitrogen would result
Answers
Answer:
17.22 Grams
Explanation:
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The ovaries and testes in the reproductive system produce hormones, so what other organ. system are they part of
Answers
50 Points
Look at the image below
Answers
Answer:
B-Sucrose molecules are too large to conduct electricity in once dissolved in water.
D-Salts, like NaCL, have ionic bonds and are considered to be electrolytes:when dissolved in water, salts dissociate and form ions.
Explanation:
Explanation:
B) Answer And D) Answer Are Correct.
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Given the standard enthalpy changes for the following two reactions
Given the standard enthalpy changes for the following two reactions:
(1) 2C(s) + 2H2(g)C2H4(g)...... ΔH° = 52.3 kJ
(2) 2C(s) + 3H2(g)C2H6(g)......ΔH° = -84.7 kJ
what is the standard enthalpy change for the reaction:
(3) C2H4(g) + H2(g)C2H6(g)......ΔH° = ?
Answers
The standard enthalpy change for reaction (3) is 117.1 kJ.
The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.
To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.
First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):
C2H4(g)C2H6(g) ΔH° = -52.3 kJ
Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ
Now, we add the two modified equations together:
C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ
When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):
C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ
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in the photosynthesis reaction, 6co2 + 6h2o → c6h12o6 + 6o2, there are 18 oxygen atoms in the reactants. how many oxygen atoms are in the products?
Answers
There are also 6 oxygen atoms in the products. This is because the products of the photosynthesis reaction include C6H12O6 (glucose) and 6O2 (oxygen gas). The glucose molecule contains 6 carbon, 12 hydrogen, and 6 oxygen atoms.
In the photosynthesis reaction, 6CO2 + 6H2O → C6H12O6 + 6O2, there are 18 oxygen atoms in the reactants.
Therefore, the total number of oxygen atoms in the products is 6. This is because oxygen gas is not bonded to anything else and is released into the atmosphere as a product of photosynthesis.
The reactants of photosynthesis, carbon dioxide (CO2) and water (H2O), are converted into glucose (C6H12O6) and oxygen (O2) gas. In this process, sunlight energy is converted into chemical energy that is stored in glucose, which is used by the plant for growth and other metabolic processes. Therefore, photosynthesis is a crucial process for life on earth.
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Selective serotonin reuptake inhibitors and tricyclic antidepressants (tcas) both function by which mechanism?
Answers
Selective serotonin reuptake inhibitors (SSRIs) and TCAs both increase the levels of neurotransmitters in the brain to improve mood and alleviate symptoms of depression, but they differ in their selectivity and side effect profiles.
Selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) both function by affecting the levels of certain neurotransmitters in the brain to alleviate symptoms of depression.
SSRIs, such as fluoxetine and sertraline, work by selectively inhibiting the reuptake of serotonin, a neurotransmitter involved in mood regulation. By blocking the reuptake process, SSRIs increase the concentration of serotonin in the synaptic cleft, enhancing its transmission and improving mood.
On the other hand, TCAs, like amitriptyline and imipramine, inhibit the reuptake of not only serotonin but also other neurotransmitters like norepinephrine. By blocking the reuptake of these neurotransmitters, TCAs increase their availability in the synaptic cleft, which can help regulate mood and alleviate depressive symptoms.
While both SSRIs and TCAs have similar mechanisms of action in terms of inhibiting the reuptake of neurotransmitters, they differ in their selectivity and side effect profiles. SSRIs are generally preferred due to their relatively fewer side effects and better tolerability.
In summary, SSRIs and TCAs both increase the levels of neurotransmitters in the brain to improve mood and alleviate symptoms of depression, but they differ in their selectivity and side effect profiles.
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What kind of energy can be transferred?
Help quick please.
Answers
Answer:
Any kind, as long as there is an action.
Answer:
Energy can be transferred from one form to another like kinetic energy to potential energy, light energy to heat energy, kinetic energy to electrical energy, light energy to chemical energy .etc ...
Explanation:
brainest please
A barometer measures the pressure of the atmosphere at different altitudes. Identify the location where the column of mercury is lowest in the barometer.
Answers
Answer:
the mercury would be lowest at location 4.
Explanation: this is because pressure and altitudes have inverse relationship at the troposphere. higher altitude has lower pressure. also pressure at location 4 contribute to pressure at location 1. but pressure at location 1 do not contribute to pressure at location 4.