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E. solid copper sulfide and silver nitrate react to form copper (ii) nitrate and solid silver sulfide. write a balanced chemical equation that describes the reaction. identify the oxidation number of each element in the reaction. (you do not need to include the total contribution of charge.) is this reaction a redox reaction or a non-redox reaction? explain your answer.

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Answer:

The given reaction is not a redox reaction.

Explanation:

Redox reaction is defined as chemical reaction in oxidation and reduction reactions occurs simultaneously.

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

Reduction reaction is defined as the reaction in which an atom gains electrons. Here, oxidation state of the atom decreases.

Solid copper sulfide when immersed in silver nitrate solution it reacts to form silver sulfide precipitate and copper(II) nitrate solution.

CuS(s)+2AgNO_3(aq)rightarrow Cu(NO_3)_2(aq)+Ag_2S(s)

Oxidation states of elements on reactant side:

Oxidation state of copper  = +2

Oxidation state of sulfur = -2

Oxidation number of silver  +1

Oxidation number of nitrogen = +5

Oxidation number of oxygen = -2

Oxidation states of elements on product side:

Oxidation state of copper  = +2

Oxidation state of sulfur = -2

Oxidation number of silver  +1

Oxidation number of nitrogen = +5

Oxidation number of oxygen = -2

No change in oxidation states of elements is observed which means that the given reaction is not a redox reaction.

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Identify both the x- and y-intercepts of the linear equation graphed on the coordinate plane above. Use the intercepts to write an equation of the line in point-slope form, slope-intercept form, and general form of a linear equation.Complete your work in the space provided or upload a file that can display math symbols if your work requires it. In your work, be sure to include the coordinates for both intercepts and the equations of the line in all three formats.

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The x int (where the line crosses the x axis) is (-2,0)
the y int (where the line crosses the y axis) is (0,-2)

(-2,0)(0,-2)
slope = (-2 – 0) / (0 – (-2) = -2/2 = -1

y = mx + b
slope(m) = -1
use either of ur points (-2,0)…x = -2 and y = 0
sub and find b
0 = -1(-2) + b
0 = 2 + b
-2 = b

so ur equation in slope intercept form is : y = -x – 2

y = -x – 2
x + y = -2
x + y + 2 = 0 <== general form

there can be 2 answer for point slope form…
y – y1 = m(x – x1)
slope(m) = -1
(-2,0)…x1 = -2 and y1 = 0
sub
y – 0 = – (x – (-2)
y – 0 = -(x + 2) <=== point slope form

y – y1 = m(x – x1)
slope(m) = -1
(0,-2)…x1 = 0 and y1 = -2
sub
y – (-2) = – (x – 0)
y + 2 = – (x – 0) <== point slope form

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Identify the complex sentence that uses a subordinate conjunction. It’s time to turn off the television and to go outside. He went to rehearsal and he finished his homework. I will not see the movie if I did not like the book. Rudolfo is going on vacation with his grandparents.

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The correct answer is “I will not see the movie if I did not like the book”. A conjunction is a word that connects or joins together words, phrases, clauses, or sentences. Subordinate conjunctions connect two unequal parts, dependent and independent clauses. Some examples of subordinate conjunctions are: after, before, unless, until, while, to mention some of them. In this sentence, the subordinate conjunction is “if“.

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Identify two long term effect of bulimia? a.weight gain b. fatigue c.gum disease d.healthy body composition

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Answer:  Gum disease and b. fatigue

Explanation:

Bulimia refers to eating disorder which makes an individual to eat large quantities of food which makes him or her feels a loss of control over eating. The individual then tries to compensate it by as vomiting or purging, fasting and so on. Its long term effect include: Gum disease and fatigue.  Gum disease refers to infection of the tissues holding the teeth. Fatigue is referred to as a state of extreme tiredness and reduced energy.

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Identify the scientist that discovered the theory of evolution

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Identify the scientist that discovered the theory of evolution

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Describe two ways he could change the metal physically and two ways he could change the metal chemically to try to identify it.

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Answered by answersmine AT 22/10/2019 – 03:18 AM

Physical change is a change that occurs in a substance that does not change the identity of the substance. It does not alter the chemical structure of the molecules ehile chemical change involves the breaking of the bonds in the substance forming new substance. To identify a metal physically, we can use properties like their boiling and melting points. We can determine at what temperatures these metals melt or boil then from literature we compare the values. Another properties that can be looked upon to are hardness, color and density. For chemical methods, we can allow it to react with substances, that will produce precipitates containing the metal in question. Also, we can use other methods like titration method. All chemical methods involves the use of chemical reactions.

Post your answer

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The weights of certain machine components are normally distributed with a mean of 8.5 g and a standard deviation of 0.09 g. Find the two weights that separate the top 3% and the bottom 3%. These weights could serve as limits used to identify which components should be rejected. Round to the nearest hundredth of a gram.

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To solve this problem,lets say that

X = the weight of the machine components. 
X is normally distributed with mean=8.5 and sd=0.09

We need to find x1 and x2 such that 
P(X<x1)=0.03 and P(X>x2)=0.03 

Standardizing:

P( Z< (x1 – 8.5)/0.09 ) =0.03
P(Z > (x2 – 8.5)/0.09 ) =0.03. 

From the Z standard table, we can see that approximately P
= 0.03 is achieved when Z equals to:

z = -1.88          and      z= 1.88

Therefore,

P(Z<-1.88)=0.03 and P(Z>1.88)=0.03 

So, 

(x1 – 8.5)/0.09 = -1.88 and 
(x2 – 8.5)/0.09 =1.88 

Solving for x1 and x2: 

x1=-1.88(0.09) + 8.5   and
x2=1.88(0.09) + 8.5

Which yields:


x1 = 8.33 g

x2 = 8.67 g

Answer: The bottom 3 is separated by the weight
8.33 g and the top 3 by the weight 8.67 g.

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Identify the sentence using the indicated pronoun correctly. a reciprocal pronoun We were laughing at one another. We were laughing at ourselves.

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Answer: The sentence that uses a reciprocal pronoun correctly is “We were laughing at one another”.

Explanation: A reciprocal pronoun is a type of pronoun that is used when two or more people are acting in the same way towards the other. In other words, when using a reciprocal pronoun, the actions of the people involved correspond to one another. In English, there are two reciprocal pronouns “each other” and “one another”. In that way, the first sentence (“We were laughing at one another”) is the correct one because it includes the reciprocal pronoun “one another” and it makes reference to two or more people carrying out the same action, which is laughing, simultaneously. In contrast, the second sentence includes a reflexive pronoun (ourselves).

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Read the following dialogue: Mark: I deserve a raise! Boss: Why do you deserve a raise? Mark: Both Rachel and Soledad make three dollars more an hour than I do, so I should make the same as they do. Boss: Both Rachel and Soledad have worked here longer than you and always receive top evaluations. Mark: Well, then I deserve a raise because I have a wife and two children at home, one of whom has a very expensive medical condition. Boss: No. Identify at least one logical fallacy Mark presents to his boss. Explain why his arguments do not persuade his boss to give him a raise.

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Explanation:

One logical fallacy that Mark makes to hi boss is that He has two children at home and one of the children is suffering from serious medical conditions where Mark has to spend more money on his treatment. This is one wrong move in support of his argument to raise his salary.

          Moreover Mark arguments to provide a raise is not persuasive  because his explanation does not have any logical reason as to why he deserves a raise. Merely because his colleagues, Rachel and Soledad earns more than Mark does not imply that Mark should also be paid equal or given a raise.

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Which of the following helps identify leaves as monocot or dicot? A) Monocot leaves have parallel veins; dicot leaves have a network of veins. B) Monocot leaves are arranged alternately on the stem; dicot leaves are arranged opposite one another on the stem. C) Monocot leaves are wide; dicot leaves are narrow.

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Answer:

The correct answer would be option A. Monocot leaves have parallel veins; dicot leaves have a network of veins.

Explanation:

Monocots are the plants having only one cotyledon or seed with only one leaf also called monocotyledons. Dicots are the plants having two cotyledons or seed with two leaves.

Monocots and dicots have few characters that make them easily recognizable such as venation pattern: The arrangement of veins in a leaf is called the venation pattern; dicots have a reticulate or network of veins type venation, while monocots have parallel venation.

Thus, the correct option would be A.

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Identify the Spanish artist who became a court painter and created a work of art known as Las Meninas, which portrayed the daughter of the royal family.

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Answer:

Diego Velázquez

Explanation:

Las Meninas is an oil painting by Spanish painter painted in 1656. This painting hangs in the Spanish national art museum Madrid, Spain. This painting shows scenes behind the Spanish court, the centre attention of this painting is the Infanta Margarita stands in the centre, she is accompanied by her Meninas (ladies-in-waiting), two dwarfs, a dog, a mirror that shows the upper bodies of the king and queen also the painter himself in this painting.

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Identify the individual who was responsible for developing theories related to geometry.

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Identify the individual who was responsible for developing theories related to geometry.

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Identify the individual who invented the process of removing bacteria cells from food and liquids such as milk, cheese, and juice.

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Identify the individual who invented the process of removing bacteria cells from food and liquids such as milk, cheese, and juice.

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Determine whether the function is linear or quadratic. identify the quadratic, linear, and constant terms y= (x-5)(5x+4)-5x^2

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Linear means that it is 1st degree, means it has x¹ basically the highest number is 1 for the power of the placeholder

quadratic means it is 2nd degree, means it has x² in it

so expand and simlfiy
(x-5)(5x+4)-5x²=
5x²-21x-20-5x=
-21x-20

so y=-21x¹-20
it’s linear because the squared terms cancel each other out

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When you identify the author of a text, which of the following are you are specifically examining in the source? A bias B origin C purpose D agenda

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When you identify the author of a text, which of the following are you are specifically examining in the source? A bias B origin C purpose D agenda

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The proper noun in the following sentence is not capitalized. Identify the proper noun. In order to go to the party, her cousin made the trip from boston. A. party B. cousin C. boston D. her

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The proper noun in the following sentence is not capitalized. Identify the proper noun. In order to go to the party, her cousin made the trip from boston. A. party B. cousin C. boston D. her

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Identify the profession that is a false cognate (the word that looks like an English word that does not have the same meaning): un pilote un pharmacien un avocat un électricien

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Identify the profession that is a false cognate (the word that looks like an English word that does not have the same meaning): un pilote un pharmacien un avocat un électricien

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In a short paragraph, identify five factors that are contributing to the Europeanization of culture and identity across the continent. What does “Europeanization” mean?

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Answer:

Western culture, sometimes balanced with Western enlightenment, Western lifestyle or European civilization. Five factors which are contributing to Europeanization of culture refers to;

  1. the heritage of social norms
  2. moral implications
  3. established inheritances
  4. faith system
  5. politics

Addition to above five factors, particular artifacts and technologies originated or associated with Europe have a major contribution in Europeanization of culture and their identity across the continent.

Europeanization:

Europeanization is defined in many ways, such as;

  • Europeanization as variations in outer regional borders. That includes the national extension of the rule of governance and the extent to which Europe as a mainland matures a sole political place.
  • Europeanization as the advancement of organizations of governance at the European level.
  • Europeanization as principal insertion of general and sub-national modes of governance. It means the distribution of charges and controls between various levels of governance.
  • Europeanization regards connections with non-Europeans and the way Europe attains a position in a wider world hierarchy.
  • Europeanization as a political scheme intending at a combined and politically powerful Europe.

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Identify the points that lactic acid fermentation and alcoholic fermentation have in common

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Both occur anaerobically, or with exercise, but lactic acid occurs in muscles (you know that burning sensation after muscle fatigue? It’s from lactic acid buildup in muscles) and alcoholic fermentation occurs by yeast. So basically, the main thing that they have in common is just that they occur anaerobically.

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On your own paper, graph the system of equations and identify the solution. x-y=1 5x-4y=0 A:(2,1) B:(-4,-5) C:(1,2) D:(-5,-4) E: No solution

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On your own paper, graph the system of equations and identify the solution. x-y=1 5x-4y=0 A:(2,1) B:(-4,-5) C:(1,2) D:(-5,-4) E: No solution

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On your own paper, solve the system of equations using elimination and identify the solution. Always list your answer alphabetically in order pairs. 5e + 4f=9 4e+5f=9 A.(2,2) B.(1,1) C.(,1,-1( D.(-2,-2) E.IMS F,NS

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5e + 4f = 9….multiply by -4
4e + 5f = 9 …multiply by 5
——————
-20e – 16f = -36 (result of multiplying by -4)
20e + 25f = 45 (result of multiplying by 5)
—————-add
9f = 9
f = 9/9
f = 1

5e + 4f = 9
5e + 4(1) = 9
5e + 4 = 9
5e = 9 – 4
5e = 5
e = 5/5
e = 1

solution is (1,1)

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Robert putnam and others have expressed concern about how social and technological developments in the last few decades have weakened peoples social ties with one another. identify the consequences of this weakening.

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Robert Putnam called “social capital” the set of social norms and practices established in society through a relationship of trust and cooperation between men. Putman criticized the capitalist mode of production that aimed exclusively at profit. In his view, the focus of production should not be commodity and profit, but benefits to workers through the equal distribution of labor and tent.

In this context, the author considers cooperation as a key vector for performance that best serves society. He cites as good examples the cooperatives that defend the interests of a given class in a homogeneous way, benefiting all workers in the segment.

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For the following issues, identify if it is an advantage of capitalism with a “C,” or a limitation of socialism with a “S.” less wealth inequality more possibility for economic growth greater emphasis on economic stability private ownership for individuals

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Based on the choices;

less wealth inequality more possibility for economic growth=S
greater emphasis on economic stability private ownership for individuals=C

For socialism less wealth because wealth is divided among the people and more focused on the nation’s economic condition. While capitalism has more opportunity and allows individual private ownership.

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When campaign workers are canvassing neighborhoods, one of their goals is to identify voters who will support their candidate. sell campaign buttons door to door. determine the income level of a community. find out which candidate voters have selected?

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Answer:

The correct answer here is to identify voters who will support their candidate.

Explanation:

Door-to-door campaigning is a process and a method that has been used by a lot of different organizations because it allows for a more personalized and individualized contact so that messages can be conveyed in a more personal manner. But probably, one of the sectors that has used this method more is the political sector, especially during political campaigns. This is because it allows for candidates to, through their representatives, have closer contact with their potential voters, it allows for messages to be delivered directly to individuals, instead of in mass, which can also help convince those who are undecided, and most importantly, this method allows candidates to rally their voters, seem closer to them and generate a voter group who will support the candidate.

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After discussing various methods of contraception with a client and her partner, the nurse determines that the teaching was successful when they identify which contraceptive method as providing protection against sexually transmitted infections (stis)?

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1. The answer is “C”.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.  

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

2. The answer is “A”.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.  

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