Answer:
4
Step-by-step explanation:
2 (6 x + 4) - 6 + 2 x = 3 (4 x + 3) + 1
12x + 8 - 6 + 2x = 12x + 9 + 1
12x + 2 + 2x = 12x + 10
2x + 2 = 10
2x = 10 - 2
2x = 8
x = 4
Work out the size of angle x
Angles
50
120
Answer:
x = 70°
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
120° is an external angle of the triangle, thus
x + 50 = 120 ( subtract 50 from both sides )
x = 70
Using the equations 2 sr(s) + o₂ (g) → 2 sro (s) ∆h° = -1184 kj/mol co₂ (g) → c (s) + o₂ (g) ∆h° = 394 kj/mol determine the molar enthalpy (in kj/mol) for the reaction c(s) + 2 sro(s) → co₂ (g) + 2 sr(s).
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=searchResultsWhat 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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A rock is thrown from the upper edge of a tall cliff.
Answer:
It come down from the tall cliff
What does daisy reveal when the group is at the plaza hotel.
Answer:
She knows why she and Tom had to leave Chicago.
Explanation:
Answer:
She knows why she and Tom had to leave Chicago.
Explanation:
Read the excerpt and answer the following question. What ideal of the american revolution did bolívar think would not work for south america? democracy individualism liberalism republicanism.
Answer:democracy
Explanation:
The idea of the American revolution did Bolivar think would not work for South America is democracy. The correct option is a.
What is the American revolution?Because of the American Revolution, true democratic politics became conceivable throughout the former colonies. In fact, the drafting of written state constitutions in 1776 and 1777 was the most important immediate result of America proclaiming independence.
The American Revolution ended in 1783, and the French Revolution began in 1789; however, the French Revolution was more complicated than the American Revolution.
The protest began in response to the British monarchy and Parliament levying taxes without regard for colonial representation.
Therefore, the correct option is a. democracy.
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A biography usually includes the main events in a person’s life and.
Answer:
A.an explanation usually includes the main events were not important
B.an explanation of the way those experience influenced that person
C.a description of the people who wanted to imitate that person
D.a description of why the author chose that person as a subject
Explanation:
Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a smoke detector (initially containing 5. 00 µg of am) that has been used for one year if the half-life is 433 years.
0.008 μg of americium-241 was consumed in a smoke detector
The half life of a substance is:
[tex]N=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\Where\ N\ is\ the \ amount \ of\ substance\ remaining\ after\ t\ years,\\N_o\ is\ the\ original\ amount, t_\frac{1}{2} \ is\ half\ life.\\\\\\Given\ N_o=5\ \mu g,t=1\ year,t_\frac{1}{2} =433\ years. Hence:\\\\N=5*10^{-6}(\frac{1}{2} )^\frac{1}{433} =4.992\ \mu g[/tex]
The amount consumed = 5 - 4.992 = 0.008 μg
0.008 μg of americium-241 was consumed in a smoke detector.
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Triangle J K L is shown. Point N is the midpoint of side J L and point M is the midpoint of side K L. The length of J K is 19. 6 meters. The lengths of J N and N L are 7. 4 meters. The lengths of K M and M L are 10. 7 meters. What is the distance between points M and N? meters.
Answer:
9.8
Explanation:
just did assignment
The tiger's whisker questions and answers.
Answer:
Explanation:
The folktale "The Tiger´s Whisker" originates from Korea, and it is used mostly as a child´s tale. It narrates the story of Yun Ok, whose husband has changed drastically from a loving, and gentle man, to an irrascible one, thanks to the wars. In desperation, Yun Ok, goes to a hermit and asks for a potion. The man tells her that in order to do so, she must bring a whisker from a live tiger. Yun Ok does as she is told, and patiently gains the trust of a tiger, and gets the needed whisker. In the end, she finds out that the lesson the hermit wanted her to learn was that to regain her husband, she needed to apply the same technique she used on the tiger, and not a potion. Given this background, the answers would be thus:
1. A folktale is defined precisely as: A story that is often passed along by word of mouth from one generation to another. This is the correct answer.
2. In this question, the answer is: Her husband has become very distant since he returned from war. This is what is narrated in the story as the reason for Yun Ok´s husband´s estrangement.
3. The correct answer here is: He laughs at Yun Ok´s idea because he thinks she is foolish to believe that solving the problem with her husband could be so simple. Though not directly stated, the hermit does laugh in a way when he says to Yun Ok that healing her husband with a potion is not like taking care of an ear infection. And he makes her feel somewhat foolish for her request. But she insists and he gives in.
4. The answer to this question is: She decides that reconnecting with her husband is worth the risk. This is stated in the story when Yun, although afraid, still continues persistently to go after the tiger, always keeping in mind that all is for the benefit of herself and her husband.
5. The answer here is: She learns that through patience, she can win her husband´s trust and heart like she earned the trust of the tiger. This is the lesson she learns when the hermit burns the whisker and makes her reflect on how she was able to get it from a wild tiger, saying that a man cannot be fiercer, or more difficult, than a tiger.
6. The answer here is: She is patient and demonstrates perseverance by spending six long months, slowly getting the tiger to trust her before she plucks out his whisker. This is exactly what she does in the story. She spends every day of those six months, carefully gaining the tiger´s trust, until he allows her near, and then allows her to take his whisker.
Which of the following statements best explains how an electron microscope generates a high-resolution image?.
Answer: TEM uses similar principles to conventional light microscopy, but electrons are transmitted through a sample to produce an image, rather than light. This technique is a very reliable way to produce high-resolution images.
Explanation:
Which group is made up of organisms that are all members of the same kingdom?.
Answer:
cat , frog , mushroom , graas , worm , shark , mold , bacteria , apple tree , fern , rose bush , corn plant
The group that is made up of organisms that are all members of the same kingdom is fern, rose bush, and corn plant. The correct option is D.
What is taxonomic rank?Taxonomic rank is the relative level of a group of organisms in an ancestral or hereditary hierarchy in biological classification.
A common system consists of the following elements: species, genus, family, order, class, phylum, kingdom, and domain. Cladistics is another term for the study of taxonomy.
When it comes to taxonomic rank, the kingdom is the second highest, with smaller groups known as phyla.
Plantae is divided into four evolutionary related groups: bryophytes (mosses), seedless vascular plants, gymnosperms (cone bearing seed plants), and angiosperms (flowering seed plants).
Kingdom Plantae consists of autotrophic, multicellular, photosynthetic eukaryotes. These are mostly non-motile, embryo-forming organisms that serve primarily as producers in the ecosystem by converting solar energy into chemical energy via photosynthesis.
Thus, the correct option is D.
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Your question seems incomplete, the missing options are:
cat, frog, and mushroom
grass, worm, and shark
mold, bacteria, and apple tree
fern, rose bush, and corn plant
A deal is a deal, so here is a good one, let's see who gets it right. I had $10. 0. My mom gives me $30. 00, my dad gave me $30. 0. My aunt and uncle give $100. 0. I had another $10. 0. How much money did i have? the right answer will be deleted & you will be asked to repost the question on your page.
Answer:
the answer to your question is 180
The function h(x) is defined as shown. H(x) = StartLayout Enlarged left-brace 1st row 1st column x 2, 2nd column x less-than 3 2nd row 1st column negative x 8, 2nd column x greater-than-or-equal-to 3 EndLayout What is the range of h(x)? –[infinity] < h(x) < [infinity] h(x) ≤ 5 h(x) ≥ 5 h(x) ≥ 3.
Answer:
The correct answer would be the third choice. (B)
Explanation:
The range of h(x) as per the given data will be h(x) ≤ 5. The correct option is B.
What is a function?A mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable).
In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.
A function, according to a technical definition, is a relationship between a set of inputs and a set of potential outputs, where each input is connected to precisely one output.
The relationship between the input or domain and the output or range is known as the function rule. If and only if there is a single value in the range for each domain value, a relation is a function.
The function is continuous and has a maximum value of 5 in the specified condition. The range of it is h(x) ≤ 5.
Thus, the correct option is B.
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A 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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Consider the equilibrium describing the endothermic dissolution of a solid in water. Z n ( o h ) 2 ( s ) − ⇀ ↽ − z n 2 + ( a q ) + 2 o h − ( a q ) if you have a saturated solution at equilibrium, what changes could you make to increase the solubility of the compound?.
To drive this equilibrium in the forward direction, for a saturated solution, the temperature of the system must be increased.
We have been told that the reaction; Zn(OH)2 ( s ) ⇄ Zn2+(aq) + 2OH − (aq), is an endothermic reaction. Recall that in an endothermic reaction, energy is absorbed and the energy of the products is greater than that of the reactants.
In order to drive this equilibrium in the forward direction, for a saturated solution, we can Increase the temperature of the solution. More Zn(OH)2 will dissolve in the solution.
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When a normal fault occurs, rocks will ___________. Question 13 options: push together not move fly up in the air spread out.
Answer:
A normal fault is cause by a plates pulling away from each other, resulting in one side slipping down.
Explanation:
One advantage of participatory budgeting is that it allows subordinates to perform the budgeting function, thus freeing up upper management for more important tasks.
Answer:
Answer is true
Explanation:
Which of the following statements about water policy is true?.
Answer:
current laws that are in place about water policy would most likely eliminate water quality problems if they were enforced.
Explanation:
Which letter shows the type of wave that can be seen by humans.
Choose the best Spanish word to complete the sentence. Alan y Enrique __________ amigos. Es están son está.
Answer:
Son
Explanation:
Just got 100%, but further explanation: Es and esta are both easy to rule out, as neither of them refers to "they" (Alan y Enrique), and estan does not work because of the weird rules. Tbh I feel like you just have to memorize them except in some cases where one just clearly makes more sense than the other.
Answer: Pick answer C: "son"
Which products are the result of a neutralization reaction.
What atomic or hybrid orbitals make up the sigma bond between sb and f in antimony(iii) fluoride, sbf3?.
Answer:
Sb electronic configuration is [Kr]4d105s25p3
It can undergoes sp3 hybridisation
sigma bond is formed between Sb & F in antomony (III) fluoride SbF3 is
"sp3 hybrid orbital of Sb + 2p - orbital of F".
the approximate F-Sb-F bond angle is 1070
Explanation:
What is the measure of ADC in quadrilateral ABCD? 45° 65° 115° 135°.
Answer: 115
Explanation:
Answer:
C. 115°
Explanation:
I did it
Complete the following equations (note that the equations are not balanced). Use the activity series if necessary. An activity series, listed as most reactive to least reactive: Upper L i, Upper K, Upper B a, Upper S r, Upper C a, Upper N a, Upper M g, Upper A l, Upper M n, Upper Z n, Upper C r, Upper F e, Upper C d, Upper C o, Upper N i, Upper S n, Upper P b, Upper H, Upper S b, Upper B i, Upper C u, Upper A g, Upper P d, Upper H g, Upper P t, Upper A u. PbCl2 MgSO4Upper C subscript 3 upper H subscript 8 plus upper O subscript 2 right arrow. ? Pb O2 MgCl PbMg ClSO4 PbSO4 MgCl2 Pb(SO4)2 MgCl.
Answer:
hey hope your day is amazing and i hope my answer to your question is helpful :)
Explanation:
***for the first question on this slide is C.) PbSO₄ + MgCI₂
***for the second question on this slide its going to be B.) MgCI₂
i hope you have a wonderful rest of your day :D !
\\\\***~yurGurlAngieee~***////
Answer:
C. PbSO4 + MgCl2
A. PbSO4
Explanation:
edge 2022
Which of the following is not a special feature of the foreign exchange rate market.
Answer:
facilitate currency conversion
Use the drop-down menus and your knowledge of suffixes to choose the correct word for each sentence. The searched for artifacts in a field. During the civil war, the country found itself in a state of near. He was when he learned that the director had given the role to another actor.
Answer:
Explanation:
1-archaeologist
2-anarchy
3-furious
yw :)
He learned that the director had given the role to another actor archaeologist.
What is Civil war?
The American Civil War, commonly referred to by other names, lasted from April 12, 1861, until May 26, 1865. The Union[f] ("the North") and the Confederacy ("the South"), the latter of which was made up of seceding states, engaged in combat.
The conflict over whether to allow slavery to spread into the western regions, creating more slave states, or to forbid it from doing so, which was widely believed to put slavery on the path to eventual extinction, was the main driver of the war.
The election of Abraham Lincoln as president of the United States in 1860 ended years of political contention over slavery because he opposed its spread into the country's western territories.
Therefore, He learned that the director had given the role to another actor archaeologist.
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Researchers are investigating the effect of ph level in water on the breeding habits of the moon jellyfish. As part of a laboratory experiment, they will randomly assign one of three treatments, low ph , medium ph , or high ph , to the water in the tanks that hold the jellyfish.
In this experiment randomization tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.
In an experiment, variables are carefully controlled in order to ensure the reliability of the results. Usually, treatments are assigned randomly to experimental units. Randomization refers to the assignment of experimental units to groups by chance.
Randomization is important in this experiment because it tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.
Missing parts;
Which of the following is the best reason for the random assignment of a treatment level to an experimental unit?
A. Randomization tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.
B. Randomization will make up for improper experimental design, data collection, and analysis.
C. Randomization makes the analysis easier since the data can be entered into the computer in any order.
D. Randomization is required by statistical consultants before they will analyze the experiment.
E. Randomization means that the experiment would not need to be replicated
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Which expression is equivalent to (StartFraction (2 a Superscript negative 3 Baseline b Superscript 4 Baseline) squared Over (3 a Superscript 5 Baseline b) Superscript negative 2 Baseline EndFraction) Superscript negative 1? Assume mc026-2. Jpg.
Answer:
1
Explanation:
The expression that is equivalent to [(2a⁻³b⁴)²/(3a⁵b)⁻²]⁻¹ is;
1/(36a⁴b¹⁰)
The given expression is;[(2a⁻³b⁴)²/(3a⁵b)⁻²]⁻¹
Rewriting this equation gives;[(2a⁻³b⁴)² × (3a⁵b)²]⁻¹
Let us simplify (2a⁻³b⁴)² to get;
4b⁸/a⁶
Similarly for (3a⁵b)²;
⇒ 9a¹⁰b²
Thus, we now have;
[(4b⁸/a⁶) × 9a¹⁰b²]⁻¹
From laws of indices, we know that; x⁵/x³ = x⁽⁵ ⁻ ³⁾ = x²Thus; a¹⁰/a⁶ = a⁴
Similarly b⁸ × b² = b⁽⁸ ⁺ ²⁾ = b¹⁰
Thus, we now have;[(4b⁸/a⁶) × 9a¹⁰b²]⁻¹ = (36a⁴b¹⁰)⁻¹
Finally, we now have;
(36a⁴b¹⁰)⁻¹ = 1/(36a⁴b¹⁰)
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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