Tag: Science

Question 2

In a container of gas, all molecules have the same kinetic energy at a certain temperature T.

Group of answer choices

True

False

Question 3

What is the definition of a mole?

Group of answer choices

The amount of a certain (large) number of particles

The average kinetic energy of a certain (large) number of particles

The mass of a certain (large) number of particles

Question 4

What is the total kinetic energy of 2 moles of helium gas (He, monoatomic) at 300 K? Round your answer to the nearest integer.

Question 5

Which one of the following is NOT one of the postulates of the ideal-gas model?

Group of answer choices

The particles are moving quickly

The particles are moving randomly

The gas is made up of a large number of particles

The collisions between the particles are perfectly elastic

The particles are far from each other and interact only rarely when they collide

Question 60.5 pts

What is the temperature (in kelvin) of 0.306 moles of gas that is confined to a 3.36-L container at a pressure of 9.25 atm? Give your answer to two decimal places.

Question 7

0.551 moles of an ideal gas are confined to a rigid container (V = 5.57 L). The pressure of gas at T = 914 K was 6.03 atm. What is the pressure (in atm) at T = 1,746? Give your answer to two decimal places.

Question 8

What is the name we give to a process in which no heat is transferred to or from the system?

Group of answer choices

isothermal

isovolumetric

isobaric

isochoric

adiabatic

Question 9

In a constant-pressure process, when gas expands, the work is leaving the system.

Group of answer choices

True

False

Question 10

Which one of the following could be the ratio gamma for a triatomic ideal gas?

Group of answer choices

9/7

7/5

5/3

Question 11

When do we use R, and when do we use kB, as a rule?

Group of answer choices

We can use R and kB completely interchangeably

We use R when we need to calculate the total energy, and we use kB when we need to calculate average energy per mode

We use R when we deal with an ideal gas, and we use kB when we talk about non-ideal gas

We use R when we talk about macroscopic amounts of gases (moles), and we use kB when we talk about a small number of particles

Please answer the following question:

Use results values and your knowledge of plant transpiration to answer the question the below: Was there a correletion between the % open stomata and the rate of transpiration in each of the expeimntal conditions? Were the result outcomes what you would expect to happen? Why or why not? Use results values and your knowledge of plant transpiration when answering questions.

please make sure the information are correct and are in your words.i have this assignment and what someone to help m who is major in bio.i have this assignment and what someone to help m who is major in bio.i have this assignment and what someone to help m who is major in bio.attached is what u gonna work on it

i will provide every material. its going to cover about Carbohydrate Lipids & Membrane Proteins Enzyme
DNA & RN Molecular Genetic ATP and Glycolys Fermentation & Gluconeogenesi 1 Metabolism & Diabete Pyruvate Oxidation Citric Acid Cycle Degradation of Amino Acids oxidation & KetoneBodies

For items 1-3, write at least 100 words each. For item 4, your comment/reply to classmates will be separate, write at least 50 words total to two or more classmates (remember to be thoughtful, positive, and constructive).

Note: Do NOT copy and paste. It is considered plagiarism. Use your own words. Cite your sources.

DB Topics:

1. 1. From Environmental Site Assessment presentation: Explain the purpose of Phase I investigations and reports. You may have to do additional research.

2. From Environmental Site Assessment presentation: Describe some of the common concerns with a property that may be addressed in a Phase I ESA.

3. From Environmental Site Assessment presentation and supplemental materials: Discuss the elements of Phase II Environmental Site Assessment. You can include applicable standards and vapor intrusion concerns. You may have to do additional research.

4. Peer review. Comment to at least one classmate’s post. With professional courtesy, provide additional analysis, constructive criticism, and additional facts and solutions. I want to see a paragraph of 50 words or more. (Note the word counter in the lower right corner of your posting window).

NOTE: Cite the sources you use for your discussion board posts either at the end of each item or at the end of your post.

I don’t know how to handle this Chemistry question and need guidance.

chemistry: complete the three following post late questions ,Must Show work on the third problem and very precise in the first two

I’m working on a geology question and need an explanation and answer to help me learn.

Describe one key thing you know about climate change.

Below, you should see three figures: (1) carbon dioxide concentrations in the atmosphere beginning with the paleoproxy record and Mauna Loa Observatory data; (2) a map of Indiana’s carbon emissions by county; and (3) a figure showing recent climate anomalies, trending toward warming. Climate Change scientists state with virtual certainty that:

“Human activities are changing the composition of Earth’s atmosphere. Increasing levels of greenhouse gases like carbon dioxide (CO2) in the atmosphere since pre-industrial times are well-documented and understood” and

“The atmospheric buildup of CO2 and other greenhouse gases is largely the result of human activities such as the burning of fossil fuels.”

However, these two scientific ideas are often misunderstood and misconstrued by the media and public. Using what you know about scientific knowledge, the carbon cycle, Indiana’s energy situation, and climate change, how could you explain these graphs and the two statements to someone who does not understand the science?

To help you to answer the question: What is Indiana’s current energy situation: what do we burn for energy and how does it relate to the map of Indiana below? Explain how what we burn for energy affects the carbon cycle and the reasons why that carbon remains in the atmosphere for long periods of time. Try to explain the figures and the two statements in your own words. You could also explain how carbon dioxide emissions are related to the greenhouse effect.

• Discussion Board Topic 2:
  • Create a thread commenting on the questioned I posed within my thread listed as Discussion 2 – Should we use Pesticides?
  • Discuss with two classmates by commenting on their threads. One or two sentence comments are not a conversation and will not count as full credit, so please have a discussion with your classmates.

1. Muscles of the Rotator Cuff: Break it down and injuries 
2. RESEARCH (Label this section)
   • The explanation / background of the topic- Teach the topic to students. Share interesting and current research on the topic.
   • Use APA citations in the text to clarify sources.
   • Reminder: Your textbook should be one of the sources.
   • CRITICAL THINKING (Label this section, too)
   • This section is only for your thoughts/conclusions. This is not research based.
   • Examples: Apply everyday phenomena in terms of the scientific concepts in your research section. Make observations and draw conclusions.
   • Tips and Tricks for Remembering and Recalling. Is there a mnemonic device that might help you memorize this information or what helps you understand this?
   • Connect the dots. Why is this an important topic for you, your community, society, or the world? How does it relate to other concepts in the text?
   • Add References and Word Count at the bottom of posts. Instructions: Peer Responses
     Click Reply when in a post to nest your responses under that main post.RESEARCH (Label this section)
   • Teach the topic to students. Responses must add new information not previously discussed. Consider new factual information tied with critical thinking. Share interesting and current research on the topic.
   • Use APA citations in the post to clarify sources.
   • Do not simply summarize another student’s post and agree/disagree.
   • Consider starting out posts with, “A research article I found said,” “Did you know,” or “Three things I found interesting were… .”
   • CRITICAL THINKING (Label this section)
   • Pose new possibilities or opinions not previously voiced.
   • Connect the dots. Why is this an important topic for you, your community, society, or the world? How does it relate to other concepts in the text?
   • Add references and word count for all p