Answer:
The number of mole of the unknown metal is 3.58×10¯³ mole
Explanation:
We'll begin by calculating the number of mole hydrogen gas, H2 that will occupy 80.3 mL at stp.
This is illustrated below:
Recall:
1 mole of any occupy 22.4L or 22400 mL at stp.
1 mole of H2 occupies 22400 mL at stp.
Therefore, Xmol of H2 will occupy 80.3 mL at stp i.e
Xmol of H2 = 80.3/22400
Xmol of H2 = 3.58×10¯³ mole
Therefore, 3.58×10¯³ mole of Hydrogen gas was released.
Now, we can determine the mole of the unknown metal as follow:
The balanced equation for the reaction is given below:
X + 2HCl —> XCl2 + H2
From the balanced equation above,
1 mole of the unknown metal reacted to produce 1 mole of H2.
Therefore, 3.58×10¯³ mole of the unknown metal will also react to produce 3.58×10¯³ mole of H2.
Therefore, the number of mole of the unknown compound is 3.58×10¯³ mole.
Practice: Solve each of the following problems using dimensional analysis (or another method). Show your work. (Use a periodic table to look up the necessary atomic masses.) A. 75 g KMnO4 = molecules KMnO4 B. 7.23 × 1024 Al atoms = grams Al C. 9.23 × 1023 Au atoms = moles Au D. 125 g H3PO4 = molecules H3PO4 E. 0.75 moles CO2 = total atoms
Answer:
Explanation:
A )
molecular weight of KMnO₄ = 158
75 g KMnO4 = 75 / 158 moles
= ( 75 / 158 )x 6.02 x 10²³ molecules
= 2.857 x 10²³ molecules KMnO4
so 75g KMnO₄ = 2.857 x 10²³ molecules KMnO4
B )
7.23 × 10²⁴ Al atoms = grams Al
72.3 X 10²³ Al atoms = 72.3 X 10²³ / 6.02 X 10²³ moles of Al
= 12 moles of Al
= 12 x 27 gm of Al
= 324 gm of Al .
7.23 × 10²⁴ Al atoms = 324 grams Al
C )
9.23 × 10²³ Au atoms = moles Au
9.23 × 10²³Au atoms = 9.23 × 10²³ / 6.02 x 10²³ moles of Au
= 1.53 moles of Au .
D )
125 g H₃PO₄ = molecules H₃PO₄
125 g H₃PO₄ = 125 / 98 moles of H₃PO₄
= (125 / 98) x 6.02 x 10²³ molecules
= 7.678 x 10²³ molecules of H₃PO₄
125 g H₃PO₄ = 7.678 x 10²³ molecules H₃PO₄
E )
.75 moles of CO₂
= .75 x 6.02 x 10²³ molecules of CO₂
= 4.515 x 10²³ molecules of CO₂.
one molecule of CO₂ = 3 atoms
4.515 x 10²³ molecules of CO₂ = 3 x 4.515 x 10²³ atoms
= 13.545 x 10²³ atoms .
The molecules, atoms, and weight of all elements and compounds has been calculated.
(A) To calculate the molecules of a compound:
Molecules = [tex]\rm moles\;\times\;avagadro\;number[/tex]
Moles = [tex]\rm \frac{weight}{molecular\; weight}[/tex]
Moles of [tex]\rm KMnO_4[/tex] = [tex]\rm \frac{75}{158}[/tex]
Moles of [tex]\rm KMnO_4[/tex] = 0.474
Molecules of [tex]\rm KMnO_4[/tex] = [tex]\rm 0.474\;\times\;6.023\;\times\;10^2^3[/tex]
Molecules of [tex]\rm KMnO_4[/tex] = 2.85 [tex]\rm \times\;10^2^3[/tex]
(B) Weight of Al:
moles = [tex]\rm \frac{atoms}{avagadro\;number}[/tex]
Moles of Al = [tex]\rm \frac{7.23\;\times\;10^2^4}{6.023\;\times\;10^2^3}[/tex]
Moles of Al = 12
Weight of Al = [tex]\rm moles\;\times\;molecular\;weight[/tex]
Weight of Al = 12 [tex]\times[/tex] 27
Weight of Al = 324 grams
(C) Moles = [tex]\rm \frac{atoms}{avagadro\;number}[/tex]
Moles of Au = [tex]\rm \frac{9.23\;\times\;10^2^3}{6.023\;\times\;10^2^3}[/tex]
Moles of Au = 1.53 mol/liters
(D) Molecules = [tex]\rm moles\;\times\;avagadro\;number[/tex]
Moles = [tex]\rm \frac{weight}{molecular\; weight}[/tex]
Moles of [tex]\rm H_3PO_4[/tex] = [tex]\rm \frac{125}{98}[/tex]
Moles of [tex]\rm H_3PO_4[/tex] = 1.275
Molecules of [tex]\rm H_3PO_4[/tex] = 1.275 [tex]\rm \times\;6.023\;\times\;10^2^3[/tex]
Molecules of [tex]\rm H_3PO_4[/tex] = [tex]\rm 7.678\;\times\;10^2^3[/tex]
(E) Atoms of [tex]\rm CO_2[/tex]:
Molecules = [tex]\rm moles\;\times\;avagadro\;number[/tex]
Molecules of [tex]\rm CO_2[/tex] = 0.75 [tex]\rm \times\;6.023\;\times\;10^2^3[/tex]
Molecules of [tex]\rm CO_2[/tex] = 4.515 [tex]\rm \times\;10^2^3[/tex]
1 molecule of [tex]\rm CO_2[/tex] = 3 atoms
4.515 [tex]\rm \times\;10^2^3[/tex] molecules = [tex]\rm 4.515\;\times\;10^2^3\;\times\;3[/tex]
Atoms of [tex]\rm CO_2[/tex] = 13.545 [tex]\rm \times\;6.023\;\times\;10^2^3[/tex]
For more information about the dimensional analysis conversion, refer the link:
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An isotope contains 47 protons, 47 electrons, and 60 neutrons. What is the identity of the isotope?
Answer:
To find the identity of the isotope we must first calculate the mass number
Mass number (M) = A + Z
Where
A is the atomic number
Z is the neutron number
A = 47
Z = 60
M = 60 + 47 = 107
From the options above
The answer is option A
Hope this helps you
describe two ways in which sodium chloride is different from sodium
Answer:
sodium chloride is a component is a salt made of a metal Sodium and a non chlorine is a alone only and element and very less stable until bonded with them metal like a n, a, k or H
300mL of 0.83mol/L acetic acid reacts with 12.0g of sodium carbonate at 21 C and 100.3kPa. What volume of dry carbon dioxide is released in this reaction? Water vapour pressure at this temperature is 2.49 kPa.
Answer:
The volume that carbon dioxide release is 2.83L
Explanation:
The reaction of acetic acid (CH₃COOH) with sodium carbonate (Na₂CO₃) is:
2 CH₃COOH + Na₂CO₃ →Na₂(CH₃COO)₂ + CO₂ + H₂O
Moles of acetic acid and sodium carbonate (Molar mass: 105.99g/mol) in the reaction are:
Acetic acid: 0.300L ₓ (0.83mol / L) = 0.249 moles.
Sodium carbonate: 12g ₓ (1mol / 105.99g) = 0.113 moles.
Based on the chemical equation, 2 moles of acetic acid reacts per moles of sodium carbonate. For a complete reaction of sodium carbonate you need:
0.113 moles Na₂CO₃ ₓ (2 moles CH₃COOH / 1 mole Na₂CO₃) = 0.226 moles of CH₃COOH
As you have 0.249 moles, Na₂CO₃ is limitng reactant.
As 1 mole of sodium carbonate produce 1 mole of CO₂, from 0.113 moles of Na₂CO₃ you obtain 0.113 moles of CO₂
Using PV = nRT, it is possible to find the volume that a gas occupies, thus:
V = nRT / P
n = 0.113 moles
R = 8.314 kPa×L/mol×K
T = 21°C + 273.15 = 294.15K
P = 100.3kPa - 2.49kPa = 97.81kPa
The vapor pressure is subtracted because is the pressure that water exerted.
Replacing:
V = 0.113mol×8.314 kPa×L/mol×K×294.15K / 97.81kPa
V = 2.83L
The volume that carbon dioxide release is 2.83LCarbon monoxide (CO) reacts with hydrogen (H2) to form methane (CH4) and water (H20).
CO(g) + 3H2(g) + CH4(g)+H20(9)
The reaction is at equilibrium at 1,000 K. The equilibrium constant of the reaction is 3.90. At equilibrium, the concentrations are as
follows.
[CO] = 0.30 M
[H2] = 0.10 M
[H20] = 0.020 M
What is the equilibrium concentration of CH, expressed in scientific notation?
0.0059
5.9 x 10-2
0.059
5.9 x 102
Answer: The equilibrium concentration of [tex]CH_4[/tex] , expressed in scientific notation is [tex]5.9\times 10^{-2}M[/tex]
Explanation:
Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.
The given balanced equilibrium reaction is,
[tex]CO(g)+3H_2(g)\rightleftharpoons CH_4(g)+H_2O(g)[/tex]
At eqm. conc. (0.30) M (0.10) M (x) M (0.020) M
The expression for equilibrium constant for this reaction will be,
[tex]K_c=\frac{[CH_4]\times [H_2O]}{[CO]\times [H_2]^3}[/tex]
Now put all the given values in this expression, we get :
[tex]3.90=\frac{x\times (0.020)}{(0.30)\times (0.10)^3}[/tex]
By solving the term 'x', we get :
x = 0.059 M= [tex]5.9\times 10^{-2}M[/tex]
Thus, the concentrations of [tex]CH_4[/tex] at equilibrium is :
Concentration of [tex]CH_4[/tex] = (x) M = [tex]5.9\times 10^{-2}M[/tex]
The equilibrium concentration of [tex]CH_4[/tex] , expressed in scientific notation is [tex]5.9\times 10^{-2}M[/tex]
Answer:B
Explanation:B
List 15 different things made of plastic in your house group them as thermoplastics and thermosetting plastics?
Answer:
Things made of thermoplastics
1) Plastic chairs
2) Plastic table
3) Plastic cups and plates
4) Nylon bags
5) Plastic cabinet
6) PVC pipes-
7) Internal electronic component such as gears
8) Vehicle dashboard
Things made of Thermosetting plastics
1) Electrical insulation
2) Handles of electrical fittings
3) Plastic hoses
4) Electric switch covering
5) Coverings of electronic gadgets
6) Silicone in adhesives
7) Keyboard
Explanation:
A plastic polymer material that becomes soft upon heating and hard once again when cooled such that the material can be repeatedly or cyclically cooled and heated numerous times with its chemical and physical properties remaining constant is known as a thermoplastic.
A plastic, polymer or resin that is hardened from its soft or liquid state by curing irreversibly such that it cannot be made soft again without a change in its chemical properties is known as a thermosetting plastic.
The mass of .10 moles of iron is:
Answer:
so mass in gram=560grams
Explanation:
number of moles=10moles
molar mass=56grams/moles
mass in gram of Fe=?
as we know that
[tex]number of moles=\frac{mass in gram}{molar mass}[/tex]
evaluating the formula
number of moles×molar mass=mass in gram
mass in gram=10moles×56grams/moles
mass in gram=560grams
i hope this will help you :)
The image below shows the Lake Mead Recreation Area,
which is near the Grand Canyon The diagram shows the
ages of layers of rock in one region of the park, The layers
at this location are fairly smooth and distinct
Private
What are these smooth, distinct layers most directly evidence of?
A Soll creep along the rocky cliffe
B. Many landslides and mudslides
6. Extensive chemical weathering
D. Many, many years of deposition
Answer:
D. Many, many years of deposition
Explanation:
The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition.
The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through wind, water and ice over the ages.
Hence, the correct answer is D.
Answer:
d
Explanation:
a pex
A scientist conducts a experiment to determine
Answer:
A scientist conducts an experiment to determine the rate of the following reaction: N2(g) + O2(g) ? 2NO(g)
Explanation:
According to the Bronsted Lowery definition, a base is a a substance that increases the hydroxide ion concentration in water b a substance that can accept a proton from an acid c a substance that can donated an electron pair to the formation of a covalent bond. d a substance tha increases the anion formed by the autoionization of the solven t e none of these
Answer:
B. a substance that can accept a proton from an acid
Explanation:
Johannes Brønsted and Martin Lowry independently developed definitions of acids and bases based on compounds abilities to either donate or accept protons (H+ ions).
The acid is the donor of the hydrogen ions while the bass is the acceptor of the hydrogen ions.
Back to the options, the correct option is B. Which is a substance that can accept a proton from an acid. All other options are incorrect.
Primary succession is most likely caused by?
Answer:
volcanic eruption.
mark my answer as brainlest......
draw a lewis structure for c2cl2 and indicate how many and what types of bonds are present
Answer:
B. 1 triple bond and 2 single bonds
Explanation:
C2Cl2 has linear structure.
For its Lewis structure, the C2Cl2 molecule has a total of 22 valence electrons. Each Carbon (C) atom has 4 valence electrons and 7 atoms in each chlorine atoms.
So, after pairing in C2Cl2, Chlorine (Cl) form 2 single bonds, one with each carbon atom andboth the Carbon (C) atoms form one triple bond with each other.
7.What is the chemical formula for Beryllium Nitride? *
Answer:
BE3N2
Explanation:
Plz answer this ASAP
Answer:
heymate !
Explanation:
The air pressure is higher at sea level and lower at higher altitudes ( top of the mountain ) .
This is because as we go higher and higher the air in the surroundings become thinner and thinner. And this does not suit you as your blood pressure at high altitudes are comparatively higher compared to the pressure around you at the top of the mountains .
And that is why some of us face breathing issues or nose bleeding due to the imbalance in the atmosphere .
And as we go lower below the sea level the pressure of air around us increases.
And that is why swimmers were tough suits while going down below the sea level, so that their bodies don't get crushed under the extreme pressure on the bottom of the sea .
There are also chances of the skull to get crushed if we don't were the suit while we are under he sea .
hope it would help !
To increase the current in a circuit, which can be increased? A. voltage B. resistance C. interference D. ohms
Answer:
voltage I'm just guessing
Answer:
Option A
Explanation:
Looking at the following formula:
I = V/R
Where V is voltage, I is current and R is resistance
In the above equation, Current and Voltage are in direct relationship such that if I is increased , V is also increased and vice versa. So, To increase the current, voltage should be increased.
What is an ethical topic?
Answer:
its an issue
Explanation:
google words not mine
"ethical issue. A problem or situation that requires a person or organization to choose between alternatives that must be evaluated as right (ethical) or wrong (unethical). ... When considering this problem, lawyers may do well to ignore the letter of the law and realize that it is, at its heart, an ethical issue."
At what angle(s) should investigators photograph a tool mark? A. parallel B. perpendicular C. 45 degrees D. varying
Answer:
B
Explanation:
You arrive at a crime scene and are told the body of the victim is in the 10 m deep pool. You walk over to what you are told is a 12 m in diameter, cylindrical pool. From the outside of the pool, you can see that the body looks badly burnt. Your partner says, “It looks like our victim had been burned alive and tried to put out the fire by jumping in the pool. The victim likely drowned to death.”
Something does not sit right with you though. If there was a fire, where did it start? There are no signs of combustion anywhere. You aren’t so sure and ask the crime scene investigator to run a sample of the pool water before letting anybody try to pull the body out.
The CSI comes back to you and tells you that normal pool water pH is roughly around 7.2, but the pool pH is actually highly basic at a level of 13 with a concentration of hydroxide ions at 1.0 x 10-1 mol/L. It becomes obvious to you that the body wasn’t burned before going in to the pool , but AFTER and there was no fire needed!
You order the body to be removed from the pool, but the CSI interjects, “It would be too dangerous with a pH that high. I suggest you get some vinegar from the store and pour it in to the pool before hand to drop the pH to 7. Draining the pool would take far too long and we need to examine the body as soon as possible.” She asks one of your constables to go to the store to purchase 5 – 4L jugs of vinegar (pH = 2) to pour in the pool, as she states it is enough to bring the pH to a safe level of 7.
It sounds like it could be enough vinegar based on your knowledge of acids and bases, but you want to double-check her estimate before sending your constable to the store. Verify whether or not she is correct using calculations. A diagram may help you with your calculations.
Hint 1: 1m3 = 1000L
Hint 2: Vcylinder = πr2h
Answer:
The vinegar is not enough to neutralize the pool.
Explanation:
The [OH⁻] in the pool is 1.0x10⁻¹mol / L. To know how many moles of OH⁻ are in the solution, you must calculate volume of the pool thus:
V(pool) = πr²h
Where r, radius is d/2 = 12m/2 = 6m and h is deep of the pool = 10m
V(pool) = π(6m)²*10
V(pool) = 1131m³
As 1m³ = 1000L:
1131m³ × (1000L / 1m³) = 1131000L in the pool.
And moles of OH⁻ are:
1.0x10⁻¹mol / L ₓ 1131000L = 131100 moles of OH⁻ are in the pool
The neutralization of OH⁻ with H⁺ is:
OH⁻ + H⁺ → H₂O
That means to neutralize the pool you must add 131100 moles of H⁺.
The H⁺ concentration in a vinegar pH = 2 is:
pH = -log [H⁺]
2 = -log [H⁺]
1x10⁻²M = [H⁺]
4L are just 4x10⁻² moles of [H⁺]. As you need 131100 moles of H⁺:
The vinegar is not enough to neutralize the pool.Which compound can be used to preserve biological specimens? A central C is double bonded to an O, and single bonded to 2 H. A chain, reading from left: C H 3 bonded to C, bonded to O, bonded to C H 2, bonded to C H2, bonded to C H 3. The single C near the beginning of the chain is double bonded to O. C H 3 single bonded to C, which is double bonded above right to O, and below right to C H 2, which is bonded to C H 3. A central C is double bonded to an O above, and single bonded to C H 3 below left and O H below right.
Answer:
A central C is double bonded to an O, and single bonded to 2 H
Explanation:
Methanal, also known as formaldehyde, is a chemical compound used to preserve dead biological specimens for further study. It is called formalin when in a solution and it helps keep specimens in a fresh state by hardening the tissues of the specimen involved.
Formaldehyde is a gaseous compound that has an aldehyde functional group i.e. -CHO and has a chemical formula, H-CHO or CH2O as described in the question that a central C is double bonded to an O, and single bonded to 2 H (see attached image for structural formula).
The chemical for the preservation of biological specimens has consisted of central C with a double-bonded O and two single-bonded hydrogens. Thus, option A is correct.
The biological compound that has been used to preserve biological specimens has been methanal. It has been the simplest aldehyde. The chemical formula of formaldehyde, also known as methanal has been H-CHO.
The structure of formaldehyde has been consisted with single bond between H and C. The central carbon has been associated with a double bond between the C and O, with single-bonded H.
Thus, the chemical for preservation of biological specimen has been consisted of central C with a double-bonded O and two single-bonded hydrogens. Thus, option A is correct.
For more information about the biological specimen, refer to the link:
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Planets near the Sun are composed of mainly rock and iron. How does the Solar Nebula theory account for this?
Answer:
The Solar Nebula Theory accounts for the creation of solar systems, stars, and planets. The theory accounts for planet composition by stating that iron compounds, silicates, and dust clump together to form planetesimals. Because of the proximity of the sun, ices and gases cannot condensate near them, so they do not become gas giants. The planetesimals then collide together due to gravity and collect to form our rocky planets.
Explanation:
A scanning tunneling microscope allows imaging of _______ particles.
Answer:
Atomic particles
Explanation:
A scanning tunneling microscope is an instrument used to view any surfaces at the levels of an atom. It was invented in the nineteenth century.
How does the government control scientific research
Answer:
The government allocates a budget for research every year. The spending of that money is determined by government priorities. Some of the money is spent directly, in government-funded research centers.
Other money is distributed to other research institutions.
Money spent by other institutions for research has no government oversight.
Explanation:
Which of the following is an amorphous solid?
O
A. Diamond
B. Graphite
O C. Glass
O D. Iron
Answer:
C. Glass
Explanation:
Amorphous solids have a non-crystalline structure and no order. In that case, Diamonds, Graphite, and Iron all have a crystalline structure and order. You are left with C as your answer.
(Help please!!! important question!!!) A neutral atom has an atomic number of 20 and a mass number of 41; how many protons, neutrons, and electrons are found within the atom? (2 points) 21 protons 21 electrons and 20 neutrons, 20 protons 20 electrons and 21 neutrons, 1 protons 20 electron and 20 neutrons, 41 protons 41 electrons and 20 neutrons
Answer: 20 protons,20 electrons and 21 neutrons
Explanation: because the number of protons is the same as the atomic number, and if the atom is neutral it has the same number of protons and electrons. if the mass number is 41 it means that there are 21 neutrons because to find the mass number you have to add protons and neutrons, so 20 + 21 = 41 and to confirm it the neutrons have been subtracted from the mass number and the atomic number, so 41-20 = 21
Describe how you could determine the specific heat of a sample of a solid substance. You may assume
at the substance does not react with water. In your answer, make sure to include a description of what
quipment you would use and how you would interpret the data you collected.
To calculate the actual heat, I'd use calorimetric to weigh a sample mass. I 'd calculate the mass of a material sample. At a specified temperature, I will heat the material. I should position the heated material inside a calorimeter for coffee cup containing an initially established mass of water. I 'd wait for the weather to stabilize and then measure the difference in weather. To assess the sum of energy consumed, I will use the increase in water temperatures. For measure real heat I will use the sum of energy per material, weight, and temperature shift.
-------------------------------
Hope this helps!
Brainliest would be great!
-------------------------------
With all care,
07x12!
Answer:
-I would use calorimetry to determine the specific heat.
-I would measure the mass of a sample of the substance.
-I would heat the substance to a known temperature.
-I would place the heated substance into a coffee-cup calorimeter containing a known mass of water with a known initial temperature.
-I would wait for the temperature to equilibrate, then calculate temperature change.
-I would use the temperature change of water to determine the amount of energy absorbed.
-I would use the amount of energy lost by substance, mass, and temperature change to calculate specific heat.
help help please help me I need the answer ASAP
Solution A has a mass of 70g. Solution B has a mass of 35 g. when they are mixed, a chemical reaction occurs in which a gas is produced. if the mass of the final mixture is 90g, what mass of gas was produced???
Answer:
15 g
Explanation:
1. According to the Law of Conservation of Mass, the sum of the products should be 105 g because 70 g + 35 g = 105 g.
2. If 90g of solution was produced and there's supposed to be 105 g, then the remaining grams would be equal to the mass of the gas.
3. 105 g - 90g = 15 g
Globalization refers to the __________. A. idea that politics is becoming more about local community issues B. scientific community's consensus on the human causes of global climate change C. changes in transportation and communication technologies since the 1980s D. growing lack of cultural diversity
Answer:
scientific community's consensus on the human causes of global climate change
Explanation:
Which example is indirect evidence used to study Earth's interior?
O composition of minerals in a rock
age of a rock from within Earth
O location of an earthquake's epicenter
O texture of different core rock samples
Answer:
location of earthquakes epicenter
Explanation:
The location of an earthquake's epicenter is indirect evidence used to study Earth's interior. Therefore, option C is correct.
What is Earth's interior ?The Earth's interior is made up of four layers, three solid and one liquid—molten metal that is nearly as hot as the sun's surface. The deepest layer is a solid iron ball with a diameter of about 1,500 miles.
The Earth's core is significant for three reasons: (1) it generates the planet's magnetic field; (2) it contains information about the planet's early history of accretion; and (3) it contains information about the planet's earliest history of accretion.
Geologists use an indirect method as well. They use seismic waves instead of knocking on walls. Seismic waves are produced when earthquakes occur. Geologists study seismic waves and how they travel through the Earth.
Thus, option C is correct.
To learn more about the Earth's interior, follow the link;
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Sulfuryl dichloride may be formed from the reaction of sulfur dioxide and chlorine. SO2(g) + Cl2(g) → SO2Cl2(g) Substance: SO2(g) Cl2(g) SO2Cl2(g) ΔH°f (kJ/mol) at 298 K –296.8 0 –364.0 ΔG°f (kJ/mol) at 298 K –300.1 0 –320.0 S°(J/K • mol) at 298 K 248.2 223.0 311.9 What is ΔG°rxn for this reaction at 600 K?
Answer:
ΔG°rxn = 28.4kJ/mol at 600K
Explanation:
Using Hess's law, you can find the ΔH°rxn and S° subtracting ΔH°f of products - ΔH°f of reactants ×its coefficients. In the same way for S°rxn
For example, for the reaction:
aA + bB → cC:
ΔH°rxn = c×ΔH°fC - (a×ΔH°fA + b×ΔH°fB).
S°rxn = c×S°fC - (a×S°fA + b×S°fB).
For the reaction:
SO₂(g) + Cl₂(g) → SO₂Cl₂(g)
ΔH°rxn = 1×ΔH°f{SO₂Cl₂} - (1×ΔH°fSO₂ + 1×ΔH°fCl₂).
S°rxn = 1×S°f{SO₂Cl₂} - (1×S°fSO₂ + 1×S°fCl₂).
As at 298K:
ΔH°f{SO₂Cl₂} = -364.0kJ/mol
ΔH°f{SO₂} = -296.8kJ/mol
ΔH°f{Cl₂} = 0kJ/mol
ΔH°rxn = 1×{-364.4kJ/mol} - (1×-296.8kJ/mol + 1×0).
ΔH°rxn = -67.2kJ/mol at 298K.
S°f{SO₂Cl₂} = 311.9J/molK
S°f{SO₂} = 248.2J/molK
S°f{Cl₂} = 223.0J/molK
S°rxn = 1×{311.9J/molK} - (1×248.2J/molK + 1×223.0J/molK).
S°rxn = -159.3J/molK = -0.159.3KJ/molK
Using:
ΔG°rxn = ΔH°rxn - S°rxn×T
Assuming ΔH°rxn doesn't change at 600K:
ΔG°rxn = -67.2kJ/mol - -0.159.3J/molK×600K
ΔG°rxn = 28.4kJ/mol at 600KA sample of an ideal gas at 1.00 atm and a volume of 1.73 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 70.0 atm, what was the volume of the sample
Answer:
Volume is 0.0247L
Explanation:
This question involves the use of Boyle's law which states that the volume of a given mass of gas is inversely proportional to it's pressure provided that temperature remains constant.
Mathematically,
v = k/p
K = VP
P1V1 = P2V2 = P3V3 = .........=PnVn
V = volume
p = pressure
Data;
P1 =1.0atm
V1 = 1.73L
P2 = 70atm
V2 = ?
P1V1 = P2V2
V2 = P1V1 / P2
V2 = (1.0×1.73)/70
V2 = 0.0247L
The volume of the sample is 0.0247L