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A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic process a phase change



A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic process a phase change

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During the revising phase of the writing strategy, why is reading the essay out loud recommended?



During the revising phase of the writing strategy, why is reading the essay out loud recommended?

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Which of the following is a good example of something a cell might do during G1 phase?



Which of the following is a good example of something a cell might do during G1 phase?

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During meiosis the chromatids of homologous chromosomes have just undergone crossing over. Which phase will the cell enter next



During meiosis the chromatids of homologous chromosomes have just undergone crossing over. Which phase will the cell enter next

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As a substance changes phase from a gas to liquid to solid: A- The spacing between molecules increases. B- It's density generally increases. C- The spacing between molecules is not affected. D- It undergoes chemical change.



As a substance changes phase from a gas to liquid to solid: A- The spacing between molecules increases. B- It’s density generally increases. C- The spacing between molecules is not affected. D- It undergoes chemical change.

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During which phase of meiosis do spindle fibers move the sister chromatids to the center of the cells?



During which phase of meiosis do spindle fibers move the sister chromatids to the center of the cells?

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A firework exploding is an example of a physical change chemical change phase change nuclear change


The balanced chemical reaction is as shown below,

                 N₂ + 3H₂  –> 2NH₃

The equation shows that every 3 moles of hydrogen, H2, there would be 2 moles of ammonia, NH3, that is going to be formed. Using this concept, we solve for the unknown in this item. 

Since we are restricted only of the number of hydrogen, it becomes our limiting reactant. 

          (6 moles H2) x (2 moles NH3/3 moles H2) = 4 moles NH3

Therefore, given enough amount of N2, the amount of NH3 that can be formed out of the 6 moles of H2 is equal to 4 moles. 

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Which of the following is not something you should check during the revision phase of writing your research paper


Here are a few pointers; hope this is useful)

Ovation-by definition- is show of appreciation from an audience, for a person’s accomplishments or flaw.

“Everyone deserves a standing ovation because we all overcometh the world.”

A person’s accomplishment could be how they made a positive change in this world, strong leadership- that makes them a effective leader or simply helping others. A person’s flaw- mistakes in life, sin or even guilt should also be considered an appreciation- an ovation for representing mankind’s flaw and that humanity makes mistakes, fulfilling at least one deadly sin such as greed, lust, selfishness etc.

Thus, regardless of a person’s achievement or flaw- a person deserves an applause for, not the least, living in this society and this world that we are all living together and dying together.

That was just the introduction.. the best part is yet to come.. now it’s your turn!!

Here are other pointers to talk about in your essay:

Shakespeare’s famous line “All the World’s a stage. That agrees with your line: “Everybody deserves a standing ovation…”

Shakespeare explains that men and women are like players: they live, and die, some being celebrated and some forever living in solitude till their death. Shakespeare states the world is a “stage” which symbolizes that mankind is in its peak. The world is changing everyday: little by little and humanity is falling behind.
Due to our world turning into machinery: factories, an automotive future: where humans only job to live (entrance) and to die (exit) the famous humans remembered and the flawed not recalled.

This is according to Shakespeare’s imagery.

I don’t know what grade your in, but I think simplifying Shakespeare’s word of mouth in your essay would be handy and useful as it has strong references of your quote, and agrees strongly in your essay.

Hope this helps 🙂

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Dr. wren is in the process of diagnosing lily’s psychological disorder. after asking lily a few questions about her symptoms, lily reveals that she experiences alternating episodes of euphoria and distress. on some days, lily claims that she feels like she is capable of doing anything in the world. during this phase, she can’t sleep; feels restless, and is extremely excitable. on the other days, lily feels utterly worthless and miserable. during this phase, lily lies in bed all day and is troubled by morbid thoughts. in the context of disorders involving emotion and mood, it can be inferred that dr. wren is likely to diagnose lily with _____.


Answer:

The answer is C. In order to carefully control conditions and confirm or disconfirm a hypothesis about the causes of behavior, one must perform an experiment.

Explanation:

Experimental research allows the researcher to control all the variables in order to create the conditions that can confirm or disconfirm a hypothesis. This method aimes to establish a relation of causality between two variables, which means that one variable is generated and determined by the other; this is posible because all of the other variables that can influence it have been controlled.

When a researcher conducts a survey or engages in naturalistic observation, he can’t control the variables, therefore, he can only establish a correlation between two variables, but not of causality.

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A person in the manic phase of bipolar disorder may have?


The right option is; a. they are usually written in first person.

A diary is a daily record of personal experiences. A diary contains discrete records that are arranged by date stating what has occurred daily, or other period. A personal diary may contain personal experiences, feelings or thoughts while a journal is a daily record of activities, ideas or observations on any event or things. A journal may also contain personal experiences, feelings, or thoughts. In journals and diaries, the writer may write events from their perception using the first person such as “I”.

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The documentation resulting from the design phase of the ____ is a set of design specifications that illustrates the program needed to fulfill the program requirements.



The documentation resulting from the design phase of the ____ is a set of design specifications that illustrates the program needed to fulfill the program requirements.

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55 kg of liquefied natural gas (lng) are stored in a rigid, sealed 0.17 m3 vessel. in this problem, model lng as 100% methane. due to a failure in the cooling/insulation system, the temperature increases to 200 k, which is above the critical temperature; thus, the natural gas will no longer be in the liquid phase.



55 kg of liquefied natural gas (lng) are stored in a rigid, sealed 0.17 m3 vessel. in this problem, model lng as 100% methane. due to a failure in the cooling/insulation system, the temperature increases to 200 k, which is above the critical temperature; thus, the natural gas will no longer be in the liquid phase.

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According to selye (1956, 1976), the _____ phase of the general adaptation syndrome is responsible for the person making efforts to cope with the threat.


In tropical rain forest, the animals will have to deal with higher temperatures and greater rainfall. One example of an adaptation they might need is a thin, water-proof coat. This will prevent heat from becoming trapped inside their fur/hair/feathers, and the water-absorbing coating will allow water to stick to the inside of the coat without being absorbed, where the water will absorb the heat instead of themselves, and will cool the through evaporative cooling (heat release through evaporation)

In a deciduous forest, there is much colder temperatures, and significantly less rainfall. These animals would likely want a thicker water-proof coat. This is because the thicker coat would allow heat to become trapped, keeping them warm in the winter, and the water-proof coating prevents water from freezing in their fur, making them colder.

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According to Le Chatelier’s principle, a change in pressure affects the chemical equilibrium of the reaction system under what condition? The reactants and the products are in the solid phase. The reactants and the products are in the liquid phase. Some of the reactants or the products are in the gaseous phase. Some of the reactants or the products are solid, and some are liquid.


This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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According to Le Chatelier’s principle, a change in pressure affects the chemical equilibrium of the reaction system under what condition? The reactants and the products are in the solid phase. The reactants and the products are in the liquid phase. Some of the reactants or the products are in the gaseous phase. Some of the reactants or the products are solid, and some are liquid.


This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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During which phase do chrosomes assemble at apposite polesprophasetelophaseAnaphaseMetaphase


Duck viewed relationships as a series of events. There are four main phases, in which the perception of the people involved in the relationship changes due to strain from different factors.  The phases are:

1) Intra-psychic phase
The individual does not express dissatisfaction or unhappiness with the relationship yet but feels it.

2) Dyadic phase
Discussion regarding the negative feelings is usually carried out in this phase, and anger and guilt tend to rise.

3) Social phase
The separation of the two individuals is shared socially and both choose their own friends and supports for this phase.

4) Grave-dressing phase
This phase occurs some time after the relationship has ended, and the individuals will look back thinking of all the things they did correctly, while also recollecting the negatives of the other person. Trust in relationships is rebuilt in this phase as the individual becomes ready for a new relationship.

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The phase change in which a substance changes from a liquid to a solid is A. freezing. B. melting. C. sublimation. D. condensation.


The formula for freezing point depression is:

ΔT = Kf * m         —>1

Where,

ΔT = change in temperature = 2.88 degrees Celcius

Kf = freezing point molar constant of solvent

m = molality (moles solute/mass solvent)

First we calculate for molality since we are given the mass
of solute and solvent.

Molar mass of pentane = 72.15 g / mol

molality m= (0.123 g / 72.15 g / mol) / (2.493 x 10^-3 kg)

m = 0.684 molal

Going back to equation 1:

ΔT = Kf * m

2.88 = Kf * 0.684

Kf = 4.21 degC / molal

 

Value for Kf in question 1 given that m = 0. 829
mol/kg:

2.88 = Kf * 0.829

Kf = 3.47 degC / molal

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Stephen oswald, a 68-year-old retired salesman, was brought by squad into the acute care facility where you practice nursing. his wife accompanies him and relates how stephen reported a severe headache, shortly after he was unable to talk or move his right arm and leg. his wife indicates mr. oswald has hypertension. what should be your focus of management during this phase


The goal of the public health system is to maintain and strengthen the health and well-being of people.

This system comprises of all public, voluntary and private organizations that contribute to achieving this goal.Implement laws and regulations that secure health and ensure safety.  Some of the function of the public health is to ensure qualified public and personal health care staff., to develop plans and policies, to identify and investigate health issues and health hazards in the people…

According this definition and explanation, disease reporting is responsibility of public health. Correct answer: D Disease reporting is one way of ensuring and maintaining general public health.

All other options are personal responsibilities.

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Identify the phase in which the water molecules are closest together. identify the phase in which the water molecules are closest together. liquid gas solid dry ice


This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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Can a lunar eclipse happen during any phase of the Moon?



Can a lunar eclipse happen during any phase of the Moon?

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How are Phase 1 and Phase 2 of logistic growth different? A. A population is increasing, moving toward its carrying capacity during both phases. B. A population is at its carrying capacity during both phases. C. Population grows rapidly in Phase 1 but slows in Phase 2. D. The emigration rate is higher than the immigration rate during both phases.


Answer:

Rate of transpiration will become negligible

Explanation:

Water is a polar solvent which means it can reorient its molecular structure is a way that it can have positive and negative configuration. Due to this specific characteristics , it can adhere to any surface and also it can join with any other polar molecule.

The transpiration process require lot of such physical interactions which are possible only due to the polar nature of water.

When water is substituted by any non polar solvent , then the rate of transpiration shall become negligible after some time.

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In the gas phase, the energy difference between a cesium atom and its most stable ion is referred to as


Answer:

1) The correct answer is option A.

2) The correct answer is option B.

3) The correct answer is option C.

4) The correct answer is option C.

Explanation:

Alpha Decay, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units.

_A^Ztextrm{X}rightarrow _{A-2}^{Z-4}+_2^4alpha

In Beta-decay, a neutron breaks down into proton and an electron releasing a beta-particle. The beta particle released carries a charge of -1 units.

_Z^Atextrm{X}rightarrow _{Z+1}^Atextrm{Y}+_{-1}^0beta

In Gamma ray emission, an unstable nuclei gives out large amount of energy by a spontaneous electromagnetic process and releases gamma -radiations. These radiations are electrically neutral.

_Z^Atextrm{X}^*rightarrow _Z^Atextrm{X}+_0^0gamma

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SCIENCE HELP PLEASE!!!! Nutrient pollution causes algal blooms and fish kills. Question 2 options: True False Save Question 3 (1 point) Question 3 Unsaved In normal ecosystem low nutrient levels keep algae in check. Question 3 options: True False Save Question 4 (2 points) Question 4 Unsaved Which of the following contributes to excess nutrients entering the bay? Question 4 options: Sewage run-off Not recycling Agricultural run-off Air pollution Save Question 5 (2 points) Question 5 Unsaved In order to get Phase 2 to turn blue (like we saw in Phase 1), did we need more or less drops of Reagent D than what we used in Phase 1? Question 5 options: More Less Save Question 6 (2 points) Question 6 Unsaved Which stage of of the experiment had the MOST dissolved oxygen in the water? Question 6 options: Phase 1 Phase 2 Phase 3



SCIENCE HELP PLEASE!!!! Nutrient pollution causes algal blooms and fish kills. Question 2 options: True False Save Question 3 (1 point) Question 3 Unsaved In normal ecosystem low nutrient levels keep algae in check. Question 3 options: True False Save Question 4 (2 points) Question 4 Unsaved Which of the following contributes to excess nutrients entering the bay? Question 4 options: Sewage run-off Not recycling Agricultural run-off Air pollution Save Question 5 (2 points) Question 5 Unsaved In order to get Phase 2 to turn blue (like we saw in Phase 1), did we need more or less drops of Reagent D than what we used in Phase 1? Question 5 options: More Less Save Question 6 (2 points) Question 6 Unsaved Which stage of of the experiment had the MOST dissolved oxygen in the water? Question 6 options: Phase 1 Phase 2 Phase 3

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The change of phase from vapor to a liquid is called

ANSWER 1: Reaction Time

EXPLANATION: When someone is playing Volleyball, reaction time is very important to respond to the incoming volleyball. The definition of reaction time is the length of time taken for a person or system to respond to a given stimulus or event. This timing should be perfect in order to give back the reply to opponent.

ANSWER 2: Balance

EXPLANATION: Though Competitive Biking is a non-racing sport still it needs balance for participants. Balance helps a person to stay on the bicycle even on lower speed. Jim would need to excel and give his utmost attention to improve balance.

ANSWER 3: Weight lifting and dancing

EXPLANATION: Outside school, Weight lifting and dancing can accomplish the most vigorous physical activity. These sports are widely available outside the school. Weight lifting can be done in any gym and dance in one of the most popular activity for many though it is not seen as a form of physical activity or sports.

ANSWER 4: Archery and Bicycling

EXPLANATION: For Emma to avoid sports which includes power, she must avoid Archery. Archery requires a lot of power and sometimes even body-builders find it difficult to pull a bow. Archery uses muscles of the shoulders and upper back are the rhomboids, levator scapulae, trapezius, deltoids, latissimus dorsi, and the rotator cuff muscle group, which includes the supraspinatus, infraspinatus, and teres minor. Bicycling also uses muscles of quadriceps and hamstrings in the upper leg, and the gastrocnemius and soleus in the calf. This causes pedaling action.

ANSWER 5: Aerobic, because it uses oxygen for a long duration

EXPLANATION: To raise heart rate to middle of target heart rate zone if the person is doing cycling, it is similar to doing aerobics. Aerobics is a cardio-vascular exercise which usually increases the breathing rate with the increase of heart rate.

ANSWER 6: Benefits of muscle strength increase as you get older.

EXPLANATION: The benefits of muscle strength increases as you get older. Older persons need more focus on muscles. Muscle get attached to the skin and gives skin a strength which helps them to sustain the old age and keeps them fit.

ANSWER 7: Tyrell

EXPLANATION: Comparing all the other members, Tyrell has worked the most. His heart rate zone is 140 – 183 bpm which is maximum than all the other members mentioned in the table. This range shows the comparison of heart rate of different individuals, out of which Tyrell had the highest heart rate for the exercise of stair climbing.

ANSWER 8: Special Offer

EXPLANATION: The advertisement doesn’t claim any generalized statement rather it has a special offer. Fitness programs are one of the products which people know they need to buy but still doesn’t get attention. This is why advertisements are made like this so that people gets attracted to it.

ANSWER 9: Make it measurable by explaining how far away the target is

EXPLANATION: If a person needs to work on his/her strength, nothing is better than measuring your statistics so that you can keep a close track on your performance target. This makes working on strengths a fun process and a happening place to practice, thus improving the accuracy without having any stress.

ANSWER 10: Increase the amount of time he runs

EXPLANATION: For Mason to get the most benefit from his heart, he should increase the amount of time of running. This will increase his heartbeat because more oxygen would be needed to release the energy during the running. The more the heart will pump the blood, the more energy will be released and eventually the hear rate will increase.

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During which phase of the autopsy with the brain be removed and examined


Answer:

The correct answer is hominid tooth size decreased as they relied on cooked foods and tools for cutting.

Explanation:

Ancient humans started using the tools which helped them in their survival.

This use of tools showed great influence on the evolution of human teeth as it leads to the decrease in the size of the teeth over time like the smaller size of wisdom or molar teeth in modern humans or Homo sapiens. This can be suggested by the fossil studies as the fossils of “a nutcracker” or Paranthropus boisei which lived around 2.3 mya had the largest molar teeth which decreased in modern humans.

The use of tools by humans took the functions done by the teeth like cutting the food into small pieces and also helped in cooking food which caused humans not to invest much energy on growing larger teeth but producing smaller teeth.

Thus, hominid tooth size decreased as they relied on cooked foods and tools for cutting is the correct answer.