Recently Asked Questions In Chemistry

Question

In the compound Br20, Br would have an oxidation number of

and O would have an oxidation number of

Question 3 (1 point)

A

Answer

In the compound Br20, Br would have an oxidation number of +1 and O would have an oxidation number of -2.

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In Br2O, the overall charge of the compound is zero. Oxygen is more electronegative than bromine, so it will have...

Question

Diffusion:

Answer

Diffusion is the process of molecules or particles moving from an area of higher concentration to an area of lower concentration.

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Diffusion is the process of molecules or particles moving from an area of higher concentration to an area of lower concentration. This process is driven by the random...

Question

y requiring that idaho manage the wolves once mey have been reintroduced, the adona goverends

enforcing an unfounded mandate. Can you think of other unfounded mandates that are imposed on your state?

Answer

Yes, other unfounded mandates that are imposed on my state include [list examples].

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None

Question

Tribes are people who think of themselves as one and act in history as a single entity.

© True

False

Answer

True

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Tribes are groups of people who share a common identity, culture, and history, and who act together as a single entity...

Question

According to Astrophysicist Chronicles Battle over Pluto, why did Dr. Tyson

decide to exclude Pluto from the exhibits of planets?

O A. Because it displays the characteristics of an icy body rather thar

planet

B. Because he didn't have enough room left in the solar system

exhibit

c. Because the international Astronomical Union said it was not a

planet

D. Because it was too small to be noticeable among the other

exhibits

Answer

C. Because the international Astronomical Union said it was not a planet.

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Dr. Tyson decided to exclude Pluto from the exhibits of planets because the International Astronomic...

Question

Flush Away, Inc. is particularly concerned about pending legislation in Congress that would

further regulate their organization. This legislation would be classified as

O a. an internal strength.

O b. an external opportunity.

O c. an external threat.

O d. an external weakness.

O e.

a congressional chaos.

Answer

c. an external threat.

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Flush Away, Inc. is concerned about pending legislation in Congress that would further regulate their organization. This legislation would be classified as an external threat,...

Question

which explains the relationship between either environmental factor or genetics and the plants growth

Answer

Environmental factors and genetics both play a role in influencing the growth of plants.

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Environmental factors such as temperature, light, water, and soil composition can all affect the growth of plants. Genetics also plays a role in determining the growth...

Question

Give an example of an appropriate email address that should be listed on your resurne

Answer

YourName@example.com

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An appropriate email address to list on your resume should be professional and easy to remember. It should also include your name, so that employers can easily...

Question

A. Transpiration

С

Erosion

B. Nitrogen fixation by bacteria

D. Birds eliminating waste

2. Carbon dioxide is returned to the atmosphere primarily by

A. consumption by animals.

B) combustion and cellular respiration by consumers.

C. elimination of waste by animals.

D. photosynthesis by producers.

_ 3. Carbon cycles through the biosphere in all of the following processes EXCEPT

A. photosynthesis

B. transpiration

C. burning of fossil fuels

D. decomposition of plants and animals

4. Nitrogen fixation is carried out mainly by

A. humans

B

) plants

C. animals

D. bacteria

5. Which of the following steps of the water cycle is the only step that has to have living organis

to happen?

A. Transpiration

B. Condensation

C. Evaporation

D. Precipitation

2 = Short Answer (9 pts total)

Describe an example of how non-human living organisms participate in each of the cycles. List

name of the organism, the step of the cycle it is involved in, and what it does specifically in that

pts)

Name of Organism

Step Involved in

Descriptior

ter Cycle

bon Cycle

litrogen

Cycle

C If's Not Rocket Science 2020

o

Answer

1. A. Transpiration - Plants release water vapor through small pores in their leaves, which is a part of the water cycle. B. Nitrogen fixation by bacteria - Rhizobium bacteria in the roots of leguminous plants convert atmospheric nitrogen into a usable form for plants, which is a part of the nitrogen cycle. C. Erosion - The movement of soil and rock by wind, water, or ice, which is not a part of any specific cycle. D. Birds eliminating waste - Birds excrete nitrogenous waste in the form of uric acid, which is a part of the nitrogen cycle. 2. B) combustion and cellular respiration by consumers. 3. C. burning of fossil fuels - Fossil fuels are not a natural part of the carbon cycle. 4. D. bacteria - Nitrogen-fixing bacteria in the soil convert atmospheric nitrogen into a usable form for plants. 5. A. Transpiration - Water vapor released by plants through transpiration is a necessary step for precipitation to occur. Example: Name of Organism: Nitrosomonas bacteria Step Involved in: Nitrogen Cycle Description: Nitrosomonas bacteria convert ammonia into nitrite, which is a part of the process of nitrification in the nitrogen cycle.

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The Nitrosomonas bacteria are a type of bacteria that are involved in the nitrogen cycle. They are responsible for converting ammonia into nitrite,...

Question

s''o cent'oulvided into secuons win subneadings. what does the section with the

subheading "No Pain, Big Gain" describe?

A. the most common types of headaches, including migraines and sinus headaches

B. techniques for managing stress and keeping headaches under control

C. the frustration that Rebecka Flynn feels when she has to miss school because of a

headache

D. medications that can be taken to treat headaches

Answer

B. techniques for managing stress and keeping headaches under control

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The section with the subheading "No Pain, Big Gain" is likely to describe techniques for managing stress and keeping headaches under control, as this phrase...