A parabola has the following properties. Vertex at (–2, 1) directrix is x = 5 which equation represents this parabola?
Answer:
C
Explanation:
Edge 22'
What features do proteins and nucleic acids have in common? select all that apply.
Answer:
carbon, hydrogen, oxygen, nitrogen
Explanation:
not sure if these were options or not but I think this is the answer
When 70. G of li3n(s) (molar mass 35 g/mol) reacts with excess h2(g), 8. 0 g of lih(s) is produced. The percent yield is closest to
Answer:
25%
Explanation:
Li3N(s) + 2 H2(g) ⇄ LiNH2(s) + 2 LiH(s)
70 g Li3N x 1 mol Li3N/35 g = 2 mol Li3N
2 mol Li3N x 2 mol LiH/1 mol Li3N
= 4 mol LiH x 7.05 g LiH/1 mol LiH = 28.20
percent yield = actual yield/theoretical yield x 100
8 g / 28.20 g ≈ 28%
28% is closest to 25% ap classrom
When 70. G of li3n(s) (molar mass 35 g/mol) reacts with excess h2(g), 8. 0 g of lih(s) is produced. The percent yield is 25%.
What is the percent yield?The actual yield is calculated as the theoretical yield multiplied by 100 to get the percent yield. There are a variety of reasons why a chemical reaction's actual yield could be lower than its theoretical yield, and they will be covered in more detail in later chapters of the course.
Li₃N(s) + 2 H₂(g) ⇄ LiNH₂(s) + 2 LiH(s)
70 g Li₃N x 1 mol Li₃N/35 g = 2 mol Li₃N
2 mol Li₃N x 2 mol LiH/1 mol Li₃N
4 mol LiH x 7.05 g LiH/1 mol LiH = 28.20
Percent yield = actual yield/theoretical yield x 100
8 g / 28.20 g = 28%
28% is closest to 25%
Therefore, the percent yield is 25%.
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How might the new treatment plant affect the ecosystem? treated water from the plant would affect communities downriver. treated water from the plant would affect communities upriver. treated water would affect this growing city’s drinking water.
Treated water from the plant can affect communities downriver because water always moves in this direction.
What is a Wastewater treatment plant?A plant of wastewater treatment is a building where wastewater is treated to remove any type of contamination.
Wastewater treatment plants are fundamental for the human population in order to obtain water in conditions to be consumed.
In conclusion, treated water from the plant would affect communities downriver because water moves in this direction.
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The distance between two piers on a river is 45 miles
Answer:
it takes a motorboat, moving downriver, 2 hours 15 minutes to complete the journey.
Just from reading this excerpt, what could you say about him? do you find him serious? do you think he is funny? why?
Answer:
I am having an interesting time with my friend, Don Quixote, on our adventures. He is a bit silly, as he believes he is a knight on a quest. Just yesterday he attacked a windmill because he thought it was a giant. [ I had better stay with him though - he might get into some serious trouble if he doesn't have someone to watch out for him. I don't know when I will be able to return home. Your friend, Sancho. ]
Explanation:
i just did the assignment
What is the main idea of this passage? the green revolution solved one problem but created new ones. The green revolution reduced the risk of political conflict. The green revolution has resulted in decreased pollution. The green revolution has contributed to lack of food quality and nutrition
Answer:
its A
Explanation:
Answer:
A on e2022
Explanation:
Please give branliest.
If lydia can type 80 words in two minutes , how long will it take lydia to type 600 words?
Determine whether the sequence converges or diverges
Answer:
If limn→∞an lim n → ∞ exists and is finite we say that the sequence is convergent.
Explanation:
Andrea has $500 in the bank that she wants to invest in the stock market. she also wants to add $50 per month into this account from her part-time job. which is the best way for andrea to build up a diversified portfolio of stocks?
The best way for andrea to build up a diversified portfolio of stocks is; by putting her money into dollar-cost averaging.
What is dollar-cost averaging?Dollar-cost averaging is defined as an investment strategy in whereby the individual periodically purchases target assets or invests in a certain portion of funds in one security.
This therefore tells us that Dollar-cost averaging would reduce the risk tolerance associated with purchasing large stock securities.
Thus, we can recommend dollar cost averaging as the best way for andrea to build up a diversified portfolio of stocks.
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Lesson 4 skills practice properties of similar polygons
Two polygons are similar if corresponding side lengths have equal scale factor
The polygons are not similar
How to determine if the polygons are similar?From the complete question, we have two polygons with the following corresponding side lengths:
5 and 812 and 1513 and 17Calculate the scale factor (k) using:
k = Polygon B/Polygon A
So, we have:
k = 8/5 = 15/12 = 17/13
Evaluate the quotients
k = 1.60 = 1.25 = 1.31
The factors are not equal i.e.
1.60 ≠ 1.25 ≠ 1.31
Hence, the polygons are not similar
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Which of these could influence a persons biological
In what three ways does mattie and eliza’s dialogue show readers about history? that everyone, both the rich and the poor, were affected by the epidemic that teenagers were stubborn that living through the epidemic was frustrating that eliza and grandfather disagreed that many businesses lost money during the epidemic
The text shows that the rich and the poor have been affected, many businesses have lost money and the epidemic is frustrating.
How does the text show this?The narrator is unmotivated.The narrator says that the entire population is without sugar.The narrator shows how trade is fragile.The narrator shows how weak the economy is.The dialogue reinforces how the epidemic harms all people and all sectors of society. This leaves everyone without food, distressed and unmotivated.
The text to which the question refers is in the attached image.
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Answer:
A, C, E
Explanation:
A parallel circuit with a 20-ohm resistor and a 10-ohm resistor.
Considering the circuit described, it is found that the equivalent resistance is of 6.67 ohms.
What is the equivalent resistance of two resistors in parallel?It is given by the product divided by the sum of the resistances of the two resistors.
In this problem, the resistances are of 20-ohms and 10-ohms, hence:
EQr = (20 x 10)/(20 + 10) = 200/30 = 6.67 ohms.
The equivalent resistance is of 6.67 ohms.
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the millions of bacteria, viruses, and other microorganisms that reside in your stomach and small and large intestines and play an active role in digestion and metabolism is your gut
The bacteria, viruses and other microorganisms that reside in the stomach and small and large intestines play an active role in digestion and metabolism: true.
What is digestion?Digestion refers to a form of catabolic activity that is used by the body of a living organism for the break down of food into smaller sizes that can be absorbed as essential nutrients, while energy is released through the process.
Basically, the millions of bacteria, viruses and other microorganisms that reside in the stomach and small and large intestines of a living organism plays an active role in digestion and metabolism and they are mainly found in the gut microbiome.
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There are 3 white marbles and 7 blue marbles in a bag
Answer:
what are we supposed to do we I need the whole question to answer your questions
Explanation:
Light is an electromagnetic wave. which characteristic is common in all electromagnetic waves in a vacuum?
All electromagnetic waves: are transverse waves; can travel through a vacuum ; travel at exactly the same speed in a vacuum, the speed of light, 300,000,000 m/s.
A painter has painted 75% of a wall that has an area of 144 square feet. how much of the wall has he already painted?
Answer:
144 - 75% = 36
144 - 36 = (108 square feet already painted)
Franz is working hard to finish a draft of his short story. He's been working all day. By 5:00, though, he is so hungry that he must stop working and find something to eat. After he eats a sandwich, he goes back to work and finishes the draft of the story. Which motivation theory is most applicable to this situation?
Yerkes-Dodson law is the motivation theory which is most applicable to this situation.
What is Yerkes-Dodson law?This is defined as a model of the relationship between stress and task performance.
In this scenario, he he reached his peak performance with a level of stress which was hunger. This was why he paused to ease the stress by eating before continuing with the story.
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In the passage, whitman uses the word to create positive feelings and associations with safety.
Answer: C habor
Explanation:
In the passage, Whitman uses the word "harbor" to create both positive feelings and associations with safety in the mind of his readers.
What is an inference?An inference is a process through which a reader deduces the meaning of a word and information that are associated with a passage written by a writer (author) of a literary work, especially through induction.
Based on the passage, we can infer and logically conclude that Whitman used the word "harbor" to create both positive feelings and associations with safety in the mind of his readers.
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Use an online thesaurus to improve the quality of this paragraph. Make at least three changes. Antonio was a very good basketball player. During antonio’s best game, he scored 52 points for his team. During the game the crowd was very happy for antonio. After the game, the principal gave antonio a big trophy for breaking the school’s scoring record
Answer: Student answers will vary. Words that may be substituted with synonyms from a thesaurus include: best, during, good, happy, gave, big
Explanation:
Three ways in which the media often fails to fulfil their responsibilities on society
Answer:
1. When the media presents material to the public at random without verifying it.
2. A circumstance in which the media spreads misleading information while omitting to include the key facts that go along with it.
3. When the media tries to draw conclusions by comparing disparate subjects or topics.
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Explanation:
What is the meaning of the word idle as it is used in this selection? a) inactive b) incomplete c) jealous d) worried
Answer:
A ) is correct
Explanation: i did it on usa test prep
Answer: a(INACTIVE)
Explanation: i did this on progress learning
This scientist first organized the known elements by atomic weight and once organized, hypothesized that specific characteristics showed up periodically among the elements. The scientists is a) mendel b) mendeleev c) miller d) moseley
Use the model here to describe the transfer of matter and flow of energy from one trophic level to another within an ecosystem. All of the following must be addressed in your response to receive full credit: a. Discuss the transfer of biomass when one organism eats another. Use your knowledge of digestion to discuss how food is broken down and used by the consumer. B. Explain what happens to the energy that is not transferred from one organism to another. C. Explain why there are typically fewer organisms at the top of an energy pyramid. D. Use specific numbers and calculations to support your explanation
The model here is not found here but matter and energy flow in the food pyramid from lower trophic levels to higher trophic levels.
What is a food pyramid?A food pyramid is a diagram that represents the trophic relationships between species in a given ecosystem.
Biomass can be transferred when one organism eats another because life forms are composed of macronutrients such as proteins, carbohydrates and fats (lipids).
Digestion is a metabolic process where larger macronutrients are degraded onto smaller components that can be used to build body structures.
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A spinner has three sections colored green, purple, and pink. if the spinner is spun three times, how many possible outcomes are there?
Answer:
27
Explanation:
The Counting Principle states that the number of possible outcomes is equal to the product of the number of outcomes for each event. In this case, (M)(N)(O).
Answer:
27
Explanation:
The Counting Principle states that the number of possible outcomes equals the product of the number of outcomes for each event. In this case, (M)(N)(O).
What can reasonably be inferred about nitrogen fixation?
Choose 1 answer:
Fixed nitrogen ultimately reverts to its gaseous form.
Nitrogen fixation can reduce the need for chemical fertilizers.
Nitrogen-fixing bacteria can adapt to any plant species.
Nitrogen fixation has little application in commercial agriculture.
8-3 practice multiplying polynomials answers with work
An example of practice multiplying polynomials is to find the produce of (q + 6)(q + 5)
What is the polynomials about?A polynomial is known to be any given expression that is made up of indeterminates or variables.
To find the product of :
(q + 6)(q + 5), you have to collect like terms.
After that , the answer will be
q2 + 11q + 30
Therefore, q2 + 11q + 30 is the product of the above equation.
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A referee moves along a straight path on the side of an athletic field
Answer:
yes thats true becouse thats were the refrees operate
It is widely known in kevin's social club that he is the most stubborn and inflexible member. kevin complains that all his friends and members in the club are too opinionated. if his attitude is attributed to his personality, what type of factors are impacting his behavior? dispositional factors false factors reactional factors true factors situational factors
The type of factors are impacting Kevin's behavior is dispositional factors.
What are dispositional factors?Dispositional Factors is a term that is often known as Internal Factors. They are known to be a specific individual attribute that affects a person's behavior and actions.
They can be personality traits, temperament, etc. In the scenario above, Kevin is known to be stubborn and inflexible and thus this attributes are impacting his behavior.
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