Considering the Hess's Law, the enthalpy change for the reaction is 790 kJ/mol.
Hess's Law indicates that the enthalpy change in a chemical reaction is the sum of the ∆H of each stage of the reaction will give us a value equal to the ∆H of the reaction when it occurs in a single stage.
In this case you want to calculate the enthalpy change of:
C(s) + 2 SrO(s) → CO₂ (g) + 2 Sr(s)
You know the following reactions, with their corresponding enthalpies:
Equation 1: 2 Sr (s) + O₂ (g) → 2 SrO (s) ∆H° = -1184 kJ/mol
Equation 2: CO₂ (g) → C (s) + O₂ (g) ∆H° = 394 kJ/mol
First stepIn this case, first, to obtain the enthalpy of the desired chemical reaction you need 1 mole of C (s) on reactant side and it is present in second equation. But since this equation has 1 mole of C (s) on the product side, it is necessary to locate this on the reactant side (invert the reaction). And when an equation is inverted, the sign of ΔH also changes.
Second stepNow, 2 moles of SrO (s) must be a reactant and is present in the first equation. Since this equation has 2 moles of Sr0 (s) on the product side, it is necessary to locate the O on the reactant side (invert the reaction) and the sign of ΔH changes.
SummaryIn summary, you know that two equations with their corresponding enthalpies are:
Equation 1: 2 SrO (s) → 2 Sr (s) + O₂ (g) ∆H° = 1184 kJ/mol
Equation 2: C (s) + O₂ (g) → CO₂ (g) ∆H° = -394 kJ/mol
Adding or canceling the reactants and products as appropriate, and adding the enthalpies algebraically, you obtain:
C(s) + 2 SrO(s) → CO₂ (g) + 2 Sr(s) ΔH= 790 kJ/mol
Finally, the enthalpy change for the reaction is 790 kJ/mol.
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brainly.com/question/5976752?referrer=searchResults brainly.com/question/13707449?referrer=searchResults brainly.com/question/13707449?referrer=searchResults brainly.com/question/6263007?referrer=searchResults brainly.com/question/14641878?referrer=searchResults brainly.com/question/2912965?referrer=searchResultsA vector makes an angle, θ, with the horizontal. The horizontal and vertical components of the vector will be equal in magnitude if θ is.
A vector has horizontal and vertical components.
The value of [tex]\mathbf{\theta }[/tex] is 45 degrees, when the horizontal and vertical components are equal
Let the magnitude of the vector be H.
So, the horizontal (h) and the vertical components (v) of the vector would be:
[tex]\mathbf{v = Hcos(\theta)}[/tex] --- vertical
[tex]\mathbf{h = Hsin(\theta)}[/tex]
Equate both expressions
[tex]\mathbf{h = v}[/tex]
Substitute values for h and v
[tex]\mathbf{Hcos(\theta) = Hsin(\theta)}[/tex]
Divide both sides by H
[tex]\mathbf{cos(\theta) = sin(\theta)}[/tex]
When [tex]\mathbf{cos(\theta) = sin(\alpha)}[/tex], then
[tex]\mathbf{\theta + \alpha = 90^o}[/tex]
So, we have:
[tex]\mathbf{\theta + \theta = 90^o}[/tex]
[tex]\mathbf{2\theta = 90^o}[/tex]
Divide both sides by 2
[tex]\mathbf{\theta = 45^o}[/tex]
Hence, the value of [tex]\mathbf{\theta }[/tex] is 45 degrees
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Water melts at 0°c. A student observes a liquid that melts at 10ºc. Which conclusion can the student reasonably draw?.
What is a common element to many Garafuna treats and foods? meat corn coconut.
Answer:
The answer is "Coconut"
Explanation:
Have a great day!
The common element to many Garifuna treats and foods is coconut. The correct option is c.
What is Garifuna treat?Coconut is a common ingredient in Garifuna food, along with other fundamental components like roots and tubers, including yams and sweet and bitter yucca, as well as bananas and sweet potatoes, among others.
Additionally, coconut is a common ingredient in many of the main courses, snacks, and desserts. This essential component is widespread throughout the Caribbean Sea region.
This style of characteristic food, which is rich in combinations and variants, is a result of the customs of the Garifuna people's forefathers, who were primarily indigenous African, Carib, and Arawak people.
Therefore, the correct option is c, coconut.
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An automated packaging systems is responsible for packing boxes.
An automated packaging machine is a device mostly found in industrialised environment used to package and seal fast moving consumable goods.
The products could be packaged in sachets or in boxes depending on the type of packaging needed
The various types of packaging are listed bellow
Primary PackagingSecondary PackagingPrimary Package: These are package that are used to enclose the product directly, if the product is edible, the primary package is mostly food safe i.e when it comes in contact with product it does not have any form of harmful effect to the final consumer
Secondary Package: These are packages that are use to enclose are large amount of products are are enclose in a primary package, they are usually in boxes
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y = 4(x - 2)(x + 4)
In the quadratic equation above, a is a nonzero
constant. The graph of the equation in the xy-plane
is a parabola with vertex (c,d). Which of the
following is equal to d ?
A) -90
//
B) -8a
©) -5a
D) -2a
Answer-A
Explanation:
How does groundwater become polluted? a. Pollutants mixed with water pass through permeable layers above the aquifer. B. Factories dump their waste directly into aquifers. C. Refuse infiltrates the water table when garbage is dumped. D. All of the above Please select the best answer from the choices provided A B C D.
Answer:
A
Explanation:
Pollutants mixed with water pass through permeable layers above the aquifer.
What is Groundwater?
Water that is found underground in saturated regions beneath the surface of the earth is known as groundwater. The water table is the term for the saturated zone's upper surface.
Contrary to popular perception, underground rivers are not created by groundwater. Similar to how water fills a sponge, it fills the pores and cracks in subterranean materials like sand, gravel, and other rock.
Rock materials are referred to as aquifers if groundwater flows naturally out of them or if it can be pumped out of them. One of the most significant natural resources for the country is groundwater, which is found in aquifers beneath the Earth's surface.
Therefore, Pollutants mixed with water pass through permeable layers above the aquifer.
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Miranda purchased 425 shares of Dagofi Radar stock at $14. 15 apiece. She earns $374. 00 in dividends every year. What is the yield on Miranda’s Dagofi Radar stock? a. 0. 0622 b. 6. 22 c. 26. 4 d. 0. 264.
Answer:
A) 0.0622
Explanation:
One of the lady spartans was falling to the ground.
How do you embody the burger king® brand values of dreaming big, meritocracy, and authenticity?.
Burger King's brand values are vital in dictating the company's brand message, meritocracy, and personality.
The brand values of Burger King include dreaming big, meritocracy, and authenticity. They're placed at the core of the brand and dictate the message of the company.
The brand values are vital in shaping the decision-making processes. The brand values of dreaming big, meritocracy, and authenticity are can be applied in the life of an individual as it helps in one's development.
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Wwwusuaayayshsshahhsiw jejeuuerye
Answer:
thank you
Explanation:
........
Most individuals and businesses are likely to find their judicial interactions in _____.
Answer:
State courts
Explanation:
In the interior of the earth can be classified as primordial and radiogenic heat brainly.
The Core is in the interior of the earth can be classified as primordial and radiogenic heat
Shawn and Dorian rented bikes from two different rental shops. The prices in dollars, y, of renting bikes from the two different shops for x hours is shown. Shop Shawn used: y = 10 3. 5x Shop Dorian used: y = 6x If Shawn and Dorian each rented bikes for the same number of hours and each paid the same price, how much did each pay for the rental? $.
Answer:
They both rented the bikes for 4 hours and paid $24.
Explanation:
The elevation of mt everest is 29028 feet.
hjjttttyfdgrefffffffff
A gas occupies 22. 4 l at stp and 23. 0 l at 100°c and 1. 25 atm pressure. How many moles of gas did the system gain or lose?.
Answer:
Use photo math its a good choice if your having hard time with math
What is the best choice for the equation of the line of best fit shown? Note that this estimate would be a strong prediction since it is an interpolation (between data points) and the graph shows fairly strong negative correlation.
Answer: b. Y= -1.5x + 23
Explanation: got it right on edge
Answer:
first one is y= -1.5x+23
second one is 11
Explanation:
White shapes and black shapes.
Answer:
9/32
Explanation:
Hopefully it’s relevant to the question.
A conclusion that can be drawn from the outcome of flight 93 on september 11, 2001, is that.
Answer:
Flight 93 was the plane that was hijacked and caused 9/11
Explanation:
Answer:
A edge 2021
Explanation:
the plane hit the dirt due to the passengers fighting for control
If the weight of an object on earth is 245 n, what must be the mass of the object?.
Answer:
128
Explanation:
Difference between point to point and continuous path control system.
Answer:
Continuous path control system is continuous operation that perform by tool.The program used in continuous path control system is more complex .
Explanation:
Which of the following would not be considered a characteristic of communism.
If and cx = 5 units, what is dz? 2 units 3 units 4 units 5 units.
Based on the calculations, the magnitude of side DZ is equal to 4 units.
How to calculate the magnitude of DZ?From the diagram, we can deduce that CD is parallel to XZ and as such, triangle XYZ is similar to Triangle YCD. Thus, the ratio of their corresponding side lengths are equal.
By applying the similarity condition, we have:
XY/CY = ZY/YD
(XC + CY)/CY = (DZ + DY)/DY
Substituting the given parameters into the formula, we have;
(5 + 25)/25 = (DZ + 20)/20
30/25 = (DZ + 20)/20
600 = 25DZ + 500
25DZ = 600 - 500
25DZ = 100
DZ = 100/25
DZ = 4 units.
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Which of the following sentences contains the correct usage for virtuosity? a. The virtuosity of the animals was expressed in their gait. B. The musicians showed extreme virtuosity in their range. C. The virtuosity of the figures in the painting gave it a heavenly appearance. Please select the best answer from the choices provided A B C.
Answer:
The answer would be B.
Explanation:
Answer:
B. The musicians showed extreme virtuosity in their range.
Explanation:
E2020!
Expain 5 factors that can slow down
the growth of democracy in Nigeria
Answer:
hmm I think is Salam or lukira
You meet a new person at a party who tells you that she is a counseling psychologist. You correctly believe that she.
Answer: counsels people with adjustment and life stress problems.
Explanation:
i believe that the asnwer is D.councils people with adjustment and life stress problems counseling psychological speciality. ranging from career development,stress management, mental disorders prevention, personal development, attitude adjustments supervision and training, developing hobbies and interests, etc.
A sound with more vibrations per second sounds higher than a sound with fewer vibrations per second. Lesson 4. 05 Question 8 options: True False.
Answer:
true
Explanation:
because
Which of the following is not a characteristic of all plants?.
Please select the word from the list that best fits the definition A democratic system in which the named "ruler" is a symbolic head of state, and power rests in the hands of elected officials. Democracy monarchy constitutional monarchy democratic socialism.
Answer:
Constitutional Monarchy
Explanation:
just did it
A democratic system in which the named “ruler” is a symbolic head of state, and power rests in the hands of elected officials is the constitutional monarchy.
What is Constitutional monarchy?Constitutional monarchy is a form of state in which there is separation of powers, where the monarch holds the Executive Power appointing the government, while the Legislative Power, is exercised by an assembly or parliament, usually elected by citizens.
In opposition to absolute monarchy, political science distinguishes between constitutional monarchy and parliamentary monarchy. In the constitutional monarchies, the king retains the Executive Power. On the other hand, in the parliamentary monarchies, the Executive Power comes from the Legislative, which is elected by the citizens, the monarch being an essentially symbolic figure.
Therefore, A democratic system in which the named “ruler” is a symbolic head of state, and power rests in the hands of elected officials is the constitutional monarchy.
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A popular low-cost airline, budget airways, has gone out of business. Although the service and price provided by the airline was what customers wanted, the larger airlines were able to drive the low-cost airline out of business through an aggressive price war. Which component of the competitive environment does this illustrate?.
Answer:
threat of competitor rivalry
Explanation: