what is the approximate boiling pressure of refrigerant oil in a system?

A longitudinal wave makes up the second wave. The two waves will have traveled the same distance after 10 seconds since they are both longitudinal waves. Option a is Correct.

In the graphic below, an earthquake wave is depicted: An earthquake's second wave simultaneously emerges from the epicenter. They are in particular to blame for the terrible noises that follow powerful earthquakes. These waves move along the path of wave travel at a speed of around 5 miles per second, causing the crustal rock to shake.

These waves in a solid medium might either be longitudinal waves or transverse waves. P waves (for "principal" waves) denote longitudinal or compressional seismic waves through bulk material, whereas S waves denote transverse seismic waves ("secondary" ). Option a is Correct.

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Correct Question:

A wave produced by an earthquake appears in the diagram below:

A second wave leaves the center of an earthquake at the same time. The second wave is a longitudinal wave. After 10 seconds, will the two waves travel the same distance?

answer choices

a. Yes, because both waves are longitudinal waves.

b. Yes, because all waves travel at the same speed in similar mediums.

c. No, because only one type of wave can travel through a medium at a time.

d. No, because transverse waves travel at different speeds than longitudinal waves.

You should anticipate a rise in barometric pressure once the core of a mature wave cyclone has passed.

After the core of a mature wave cyclone has passed, what will happen to the barometric pressure? The atmospheric pressure will increase.

With the passage of a cold front, a dramatic change in wind direction is frequently seen. In the warmer air mass ahead of the front, winds are often out of the south-southwest before the front arrives, but as it arrives, winds typically change to the west-northwest (in the colder air mass).

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Explanation:

V=u+at

where,

v=final speed

u=initial speed,(starting speed)

a=acceleration

t=time

6=2+2a

2a=6-2

2a=4

a=4/2 = 2

a =2

2. to find time taken

v=u+at

25=5*2t

2t=25-5

2t=20

t=20/2

t=10sec

3. finding final speed

v=u+at

v=4+10*2

=4+20

v=24m/sec

5.v=u+at

=5+8*10

=5+80

V=85m/sev

6. v=u+at

8=u+4*2

8=u+8

U=8/8

u=1

these are your missing values

Answer:

Emphasis on public safety can surely reduce the risk for various groups of population

1. Proper education and training must be provided to make them aware of the risks and how they can manage those risks.

2. Proper rules and regulation must be made and strictly followed for example traffic rules so as to avoid accidents.

3. Disaster management teams should to formed to ensure minimal loss of humans and resources during any natural calamity.

4.Eradication of poverty and illiteracy should be priority so as to ensure people focus on more important issues in life rather than involve themselves in trivial things.

Explanation:

Answer:

Energy conversion

Explanation:

We regularly use automobile which runs on the chemical energy of the fuels such as diesel and petrol, the chemical energy from the fuel would convert into the thermal energy which is used to drive the engine of the vehicle,further the thermal energy converted into the mechanical energy which is used to drive the prime mover of the automobile.

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

We frequently utilize vehicles that operate on chemical energy from fuels like diesel and gasoline.

This chemical energy is transformed into thermal energy, which drives the engine of the vehicle, and then mechanical energy, which drives the prime mover of the vehicle.

Thus, we can say that the transfers and transformations of energy are necessary to operate the technology.

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Answer:

g = 1.25m/s²

Explanation:

Given the following data;

Mass = 5kg

Height = 6m

Gravitational potential energy = 24J

To find the acceleration due to gravity;

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

GPE = mgh

Substituting into the equation, we have;

24 = 5*6*g

24 = 30g

g = 30/24

g = 1.25m/s²

Therefore, the acceleration due to gravity on Planet X is 1.25m/s².

Answer:

g=0.8m/s^2

Explanation:

M=5kg

h=6m

GPE=24J

GPE=Mgh

g=GPE/Mh

g=24J/(5kg)(6m)=0.8

g=0.8m/s^2

The element which release most energy while gaining an electron is Chlorine.

Chlorine has a higher affinity for electrons than fluorine does, despite the fact that fluorine is intended to have halogens with higher electron affinity .Therefore, chlorine has the highest electron affinity among the all elements in the group.

When an electron is added to a neutral atom to create a negatively charged ion, how much energy is released. Only a few chemical elements, primarily the halogens, have values available since it is difficult to determine the affinities of atom’s electrons.

Low melting and boiling points characterize the halogens. They all react with hydrogen to create acids. Salts are easily formed when they react with metals. Their outer shell contains seven valence electrons.

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Answer: 98cm

Explanation:

Dimension of rectangle = 30cm by 25cm

Length(l) = 30cm

Width(w) = 25cm

Perimeter of a rectangle = 2(l + w)

Quadrant of circle cut away of each side of the rectangle :

Radius = 7 cm =

That is, the dimension of the triangle reduces by 2 * 7 = 14cm

New length = 30 - 14 = 16cm

New width = 25 - 14 = 11cm

The four corners =( 4 × 2πr ) / 4

2πr = 2 × 22/7 × 7 = 44cm

Perimeter = 2(16cm + 11cm)

= 2(27cm)

Perimeter = 54cm + 44 = 98cm

The velocity vector is r'(t) = (4, -3 sin t, 3 cos t), the acceleration vector is r''(t) = (0, -3 cos t, -3 sin t), the curvature is κ = 3 / 14^(3/2), and the tangential and normal components of the acceleration are aT = 0 and aN = 3.

Space Curves: Arc lengthArc length formula is given by \(L = ∫a b |r'(t)|dt\)

, where r(t) is the vector function for the given curve.

Let's find the arc length of the given space curve:

r(t) = (2t, t^2 - 2, 5 - t^2) for 0 ≤ t ≤ 4.

The speed of r(t) is |r'(t)|.r'(t) = (2, 2t, -2t) and

||r'(t)|| = √(2^2 + (2t)^2 + (-2t)^2)

= 2√2t.So,

the arc length of the space curve is

L = ∫0 4 2√2t dt

= (4/3)√2 [t^(3/2)] from 0 to 4

= (4/3)√2 (4√2 - 0)= (16/3) * 2

= 32/3.

Therefore, the length of the given space curve with vector equation is 32/3. Vector Functions for the intersection of two surfaces

The equation for the given surface is \(F(x)=(2,x²-30).\)

Let's find the vector functions for the intersection of two surfaces.

To find the intersection, we equate the two given equations:2 = y = x².

We get y = x² = 2. So, x = ±√2.

The vector functions for the intersection of two surfaces are:

r1(t) = (t, 2, t^2 - 30)

for x = √2 and r2(t)

= (-t, 2, t^2 - 30)

for x = -√2.

Given TNB for a space curveLet's find the unit tangent vector to the space curve r(t) = (cos t, sin t, t).

The velocity vector is r'(t) = (-sin t, cos t, 1).

The speed of the curve is |r'(t)| = √(sin² t + cos² t + 1) = √2.

The unit tangent vector is T = r'(t) / |r'(t)| = (-sin t/√2, cos t/√2, 1/√2).

Now, let's find a unit normal vector to the space curve.The acceleration vector is r''(t) = (-cos t, -sin t, 0).

The magnitude of acceleration is |r''(t)| = 1.

The unit normal vector is N = r''(t) / |r''(t)| = (-cos t, -sin t, 0).The binormal vector is given by B = T × N.

Therefore, the unit tangent vector to the space curve r(t) = (cos t, sin t, t) is T = (-sin t/√2, cos t/√2, 1/√2),

the unit normal vector is N = (-cos t, -sin t, 0),

and the unit binormal vector is

B = (cos t/√2, -sin t/√2, 1/√2) × (-cos t, -sin t, 0)

= (sin t/√2, -cos t/√2, 1/√2).

Velocity, acceleration and curvature

Let's find the velocity vector, the acceleration vector, and the curvature of the space curve r(t) = (4t, 3 cos t, 3 sin t) for 0 ≤ t ≤ 27.

The velocity vector is r'(t) = (4, -3 sin t, 3 cos t).

The speed of the curve is |r'(t)| = √(16 + 9 sin² t + 9 cos² t) = 5.

The unit tangent vector is T = r'(t) / |r'(t)| = (4/5, -3 sin t/5, 3 cos t/5).

The acceleration vector is r''(t) = (0, -3 cos t, -3 sin t).

The magnitude of acceleration is |r''(t)| = 3.

The tangential component of acceleration is aT = T · r''(t) = 0.

The normal component of acceleration is aN = |r''(t)| · |N| = 3.

The unit normal vector is N = (-cos t, -sin t, 0).

The curvature is κ = |r''(t)| / |r'(t)|² = 3 / (25 + 9 sin² t + 9 cos² t)^(3/2) = 3 / (25 + 9)^(3/2) = 3 / 14^(3/2).

Therefore, the velocity vector is r'(t) = (4, -3 sin t, 3 cos t),

the acceleration vector is r''(t) = (0, -3 cos t, -3 sin t),

the curvature is κ = 3 / 14^(3/2), and the tangential and normal components of the acceleration are aT = 0 and aN = 3.

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It would take approximately 16,800 calories of heat energy to heat 200ml of water from 20ºC to 80ºC.

To calculate this, you can use the specific heat capacity of water, which is approximately 1 calorie/gram ºC. Since 1 ml of water is equivalent to 1 gram, we can assume that the specific heat capacity for water in this case is also 1 calorie/ml ºC.

The temperature change is 80ºC - 20ºC = 60ºC.

So, the total heat energy required can be calculated as:

200 ml * 60 ºC * 1 calorie/ml ºC = 12,000 calories.

Therefore, it would take approximately 16,800 calories of heat energy to heat 200ml of water from 20ºC to 80ºC.

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According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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The cable should have a diameter of approximately 0.092 cm or an order of magnitude of one centimeter.

To determine the diameter of the cable needed to support a tension of 20.0 kN, we can use the principle of cross-sectional area. The maximum tension that a wire can withstand is proportional to its cross-sectional area. Therefore, to support a tension that is 83.33 times greater than the maximum tension of a single wire, the cross-sectional area of the cable must also be 83.33 times greater.

The cross-sectional area of a wire is given by the formula A = πr², where A is the cross-sectional area, and r is the radius of the wire. Since the diameter of the wire is given as 1.00 mm, the radius is 0.50 mm or 0.005 cm. Therefore, the cross-sectional area of a single wire is:

A₁ = π(0.005 cm)² = 0.00007854 cm²

To find the diameter of the cable, we can use the formula for the cross-sectional area of a circle:

A₂ = πr₂²

where A₂ is the cross-sectional area of the cable and r₂ is the radius of the cable.

We know that the cross-sectional area of the cable needs to be 83.33 times greater than the cross-sectional area of a single wire:

A₂ = 83.33 A₁ = 83.33 x 0.00007854 cm² = 0.00654 cm²

Substituting this value into the formula for the cross-sectional area of a circle:

πr₂² = 0.00654 cm²

r₂² = 0.00654/π

r₂ = √(0.00654/π) = 0.046 cm

Therefore, the radius of the cable is 0.046 cm, and the diameter is twice that:

d = 2r₂ = 0.092 cm or 0.92 mm (to two significant figures)

In conclusion, the cable should have a diameter of the order of magnitude of one centimeter (0.092 cm).

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Answer:

Kepler refined the Copernican model. Orbits are not circles along which planets move at a constant speed, but ellipses, in the central focus of which is the Sun. The planet moves in an ellipse with a variable speed depending on the distance to the Sun. On this basis, Kepler significantly simplified the Copernican model and formulated the laws of planetary motion in their orbits.

Answer:

Answer:- Volume of the balloon is 5.78 L.

Solution:- There are 0.24 moles of hydrogen gas in a balloon at 35 degree C and 1.05 atm pressure. It asks to calculate the volume of the balloon.

This problem is based on ideal gas law equation:

P = 1.05 atm, n = 0.24 mole, T = 35 + 273 = 308 K

R =

V = ?

The equation could be rearranged for the volume as:

Let's plug in the values and do the calculations to get the volume of the balloon:

V = 5.78 L

So, the volume of the gas balloon is 5.78 L.

The current in each experiment increases with increase in the voltage. Similarly, the association between resistance and the current in a circuit shows that increase in the resistance shows a reduction in the current, vice versa.

Ohm's Law states that the voltage across an electric conductor is directly proportional to the current(I) passing through it provided the resistant is constant.

So;

V ∝ I

V = IR  

where

The objective of this question want us to determine: How did the current change for each test provided that Avery uses a 1.5-volt battery, then she uses a 3-volt battery and lastly she uses a 9-volt battery, given that the resistance is constant through out the whole process.

In the first experiment;

In the second experiment;

In the third experiment;

Therefore, we can conclude that the current in each experiment increases with increase in the voltage. Similarly, the association between resistance and the current in a circuit shows that increase in the resistance shows a reduction in the current, vice versa.

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Answer:

It depends on how much you stress I recommend starting calm!

Explanation:

Answer:

I'm a senior right now, but I think the subjects gradually get more difficult, it's not all too difficult though, it's just stressful because the amount of work your expected to finish.

Explanation:

Answer:

6.002

6.020

6.023

6.302

Explanation:

Answer:

Below

Explanation:

Water that boiled off =   .080 - .071 = .009 kg  = 9 gm

Your question did not state the INITIAL temperature of the water

   THIS answer will assume it was at its boiling point

25200 J / 9 g  =  2800 J / g  = heat of vaporization

Answer:

hurricanes are the most awesome Violet storms on the earth people call the storms by other names such as typhoon or cyclone depending on where the car whatever they are called topical cologne all from the same way

Explanation:

so technically hurricanes are the most Violet storms

The solubility of lead nitrate is 52 grams per 100 milliliters of water at 0°C. Since the question does not specify the temperature, we will assume it is 0°C.To calculate the number of millimeters of water required to dissolve 5 g of lead nitrate,

we must first calculate the number of milliliters of water required to dissolve 5 g of lead nitrate.52 grams of lead nitrate can dissolve in 100 milliliters of water. So,5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.

main answer:5 g of lead nitrate can dissolve in 9.6 millimeters of water. :52 grams of lead nitrate can dissolve in 100 milliliters of water. So, 5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.

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To measure the speed of an animal, you would need to follow these steps:

1. Choose a suitable location: Find a flat, straight path where the animal can move without any obstacles or distractions.
2. Mark the start and end points: Define a specific distance for the animal to travel, and mark the start and end points. This distance will be used to calculate the speed.
3. Time the movement: Use a stopwatch to measure the time it takes for the animal to travel from the start point to the end point.
4. Record the data: Note down the time taken by the animal to cover the distance.
5. Calculate the speed: Speed can be calculated using the formula, Speed = Distance / Time. Divide the distance by the time taken to get the speed of the animal.
6. Repeat the process: To obtain more accurate results, you should repeat the experiment several times and calculate the average speed.

In summary, to measure the speed of an animal, you need to select a suitable location, mark the start and end points, time the movement, record the data, and calculate the speed using the formula, Speed = Distance / Time. Repeat the process to ensure accuracy and obtain an average speed value.

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The correct answer are as follows

(i) 250 m is the maximum height

(ii) Time to reach the height is 5 s

(iii) Time of the flight is 10 s

(iv) Horizontal distance from the foot of the tower to point Q is 433 m

Given,  π°= stand as the angle= 30°

h= height= 100m

u= initial velocity= 100m/s

g= acceleration due to gravity= 10m/s²

(i) maximum height= h(max)= u²sin²π°/g

= 100²(sin30°)²/10

= 10000(0.25)/10

= 1000(0.25)

= 250m

height(max)= 250m

(ii)time it takes to reach the height= using π°/g

= 100sin30°/10

= 10 × 0.5

= 5

t= 5s

(iii)time of flight, T= 2t

T= 2(5)= 10

T= 10s

(iv)horizontal distance=H= u²cosπ°/2g

= 100²(cos 30°)/2(10)

= 10000(0.866)/20

= 500(0.866)

= 433

H ( distance)= 433m.

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The main difference between Kinetic energy and Potential energy is that kinetic energy refers to movement while potential energy refers to storage.

Kinetic energy is a type of energy in motion or energy in movement such as a turbine (mechanical energy), while Potential energy refers to the energy that is stored to be used when required (e.g. chemical bonds of foods).

Therefore, with this data, we can see that  Kinetic energy is used as movement, while Potential energy is stored to be used in the future.

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The resistance of the electric heating element can be determined using Ohm's law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage across the element is given as 232 volts and the current flowing through it is 19 amperes. The correct option is 12 ohms.

Applying Ohm's law, we calculate the resistance as:

R = V / I

R = 232 volts / 19 amperes

R ≈ 12 ohms

Therefore, the resistance of the element is approximately 12 ohms. This means that for every ampere of current flowing through the element, there is a voltage drop of 12 volts. The resistance value of 12 ohms indicates that the element has a moderate level of electrical resistance, which allows it to generate heat efficiently when current flows through it. Thus, the correct option is 12 ohms.

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The equation for a cross section of the satellite dish is y² = 4px.

In a parabolic satellite dish, the receiver is placed at the focus of the parabola. The parabola is a symmetrical curve with the property that all incoming parallel rays of light (or radio waves in the case of a satellite dish) reflect off the surface and converge at the focus.

The standard equation for a parabola in Cartesian coordinates is y² = 4px, where (x, y) are the coordinates of any point on the parabola, p is the distance from the vertex (the point where the parabola intersects the axis of symmetry) to the focus, and y² = 4px represents the relationship between the x and y coordinates.

In the context of a satellite dish, the vertex of the parabola is typically located at the origin (0, 0), and the receiver is placed at the focus. Therefore, the equation for a cross section of the satellite dish can be written as y² = 4px, where p represents the distance from the focus to the vertex.

This equation describes the shape of the parabolic reflector of the satellite dish, ensuring that incoming signals parallel to the axis of symmetry are reflected towards the focus where the receiver is positioned.

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A hockey puck sliding at constant velocity across the ice is in equilibrium.

Velocity is a measure of an object's rate of change of position with respect to time. It is a vector quantity, meaning it has both magnitude and direction. Velocity is calculated by dividing the change in position (displacement) by the change in time. In physics, velocity is often used to describe the speed and direction of an object in motion.

For example, a car traveling 60 miles per hour in a northerly direction has a velocity of 60 miles per hour north. The units of velocity can be expressed in meters per second, feet per second, miles per hour, or any other appropriate unit of distance and time. Velocity can change over time due to acceleration or deceleration.

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A hockey puck sliding at constant velocity across the ice is in equilibrium. Thus, the correct option is B.

Equilibrium is a state of balance of the forces between the opposing forces or the actions which are either static, as in a body which is acted on by forces whose resultant force is zero or dynamic, as in a reversible chemical reaction when the rates of reaction in both the directions are equal.

A hockey puck sliding over at a constant velocity across the ice is an example of equilibrium forces. This is because there is no change in velocity of the objects.

Therefore, the correct option is B.

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Answer:

leaves will deverge

Explanation:

because of the nagwtive charge will become positive

Cold water does not react with iron. Iron, however, interacts with steam to create iron and hydrogen oxide. Fe3O4 + 4H2 = 3Fe(s) + 4H2O. Iron (II, III) oxide, also known as ferric oxide (Fe3O4), is a combination of Fe O and Fe2O3.

Ferric oxide (Fe2O3) and hydrogen gas are produced when ferrous oxide (Fe O) and water (H2O) combine (H2). This reaction yields a black solid called Fe3O4, which is frequently used as an antirust pigment. Understanding the chemical equation for this reaction is required to determine whether a specific mixture will produce Fe3O4: 2Fe3+(aq)+3H2 = 2Fe(s)+3H2(g) (g). According to this equation, two moles of iron metal will interact with to create two moles of ferric ion and three moles of hydrogen gas, it takes three moles of hydrogen gas. All of the iron will be transformed to Fe3+ ions and no Fe3O4 will occur if the combination only contains one mole of each component.

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The index of refraction of the transparent material is approximately 1.46.

The index of refraction (n) of a transparent material is defined as the ratio of the speed of light in vacuum to the speed of light in the material. The relationship between the angles of incidence (θ₁) and refraction (θ₂) and the indices of refraction of the two media can be described by Snell's law, which states that:

n₁ sin(θ₁) = n₂ sin(θ₂)

where n₁ is the index of refraction of the first medium (in this case, air), and n₂ is the index of refraction of the second medium (the transparent material).

Given that the angle of incidence is 25 degrees and the angle of refraction is 17 degrees, we can use Snell's law to solve for n₂:

n₁ sin(θ₁) = n₂ sin(θ₂)

(1.000 sin 25°) = n₂ sin 17°

Solving for n₂, we get:

n₂ = (1.000 sin 25°) / sin 17°

n₂ ≈ 1.46

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The standard enthalpy change for the overall reaction is -kJ.

362.4

Explanation:

To find the overall enthalpy change, we need to add the enthalpy changes of the individual reactions. However, we need to reverse the second reaction and multiply it by 2 to get the reactants on the correct side. This gives us:

2HgO(s) --> 2Hg(l) + O2(g) DH = +181.6 kJ

Fe(s) + O2(g) --> FeO(s) DH = -544.0 kJ

Now, we can add the two reactions together:

2Fe(s) + 2HgO(s) --> 2FeO(s) + 2Hg(l)

DH = (-544.0 kJ) + (+181.6 kJ) = -362.4 kJ

Therefore, the standard enthalpy change for the overall reaction is -362.4 kJ. This means that the reaction is exothermic, as energy is released in the form of heat.

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