CHEMISTRY MIDDLE SCHOOL

Help please ASAP

How is salicylic acid obtained?

Answers

Answer 1
Answer: A count pound obtained from the bark of white willow and Wintergreen leaves.It has bacteriostatic ,fungicidal, and keratolytic actions.

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Have people considered that aliens could possibly live without oxygen and water and we are looking in the wrong direction for a new life form?This is astronomy, not chemistry. Sorry, they do not have the option of astronomy.

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I have never heard anyone ever say anything about aliens only living by using the same metabolistic processes as humans... But.. there may likely be another planet out there that does use oxygen, although at a different percentage from Earths. Anyways, even if we do find "other" life forms, who's to say that they're on the same level as us? Have you ever considered the fact that ants to us are like we are to other life forms out there and maybe they don't want or can't communicate with us because they see themselves as superior?

Hope that helps!

HELP PLZ !!!! 20 POINTS !!!How were natural resources important in the growth of Minnesota flour milling, lumbering, and iron mining industries?

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Made people Want to come and start a business 
By all the resources many saw Minnesota as a place to make business and get richer.

What is the chemical name for CCl4

Answers

Tetrachloromethane is the name for that

The light bulb transfers electrical energy into light. What is one type of energy that is also generated that is NOT a desired effect?

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The answer to that question is most likely heat since the light bulb uses a resister to produce light but resisters also produce a lot of heat which can sometimes be bad.

What happens to the rock along the ridge when new molten material erupts?

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The molten material then spreads out, pushing the older rock to both sides of the ridge. As the molten material cools, it forms a strip of solid rock in the center of the ridge. Then more molten material flows into the crack. The material splits apart the strip of solid rock that formed before, pushing it aside. Hope this helps! (:

A construction company recently filled in a local pond to build new houses. Duringthe following weeks, a local scientist noticed a decline in the mosquito population in
the area. The scientist wants to conduct a study that will measure the change in the
local mosquito population over a period of three months. Which research method
would give the scientist the best data for conducting his study?
A. a three-month case study observing the behavior of animals that depend on
mosquitoes for food
B. a survey asking residents about their observations of the local mosquito
population
C. a collection device in the area that counts the number of mosquitoes caught
weekly
D. a controlled lab experiment with mosquitoes that limits watercolor the
experimental group

Answers

Answer: (C.) a collection device in the area that counts the number of mosquitoes caught

weekly

Explanation: I took the test :D

Final answer:

The most suitable research method for measuring a change in the mosquito population due to construction would be 'a collection device in the area that counts the number of mosquitoes caught weekly'. This method provides quantifiable, reliable data over the three-month study period.

Explanation:

To thoroughly study the change in the local mosquito population due to the construction, the most suitable research method for the scientist would be to use 'a collection device in the area that counts the number of mosquitoes caught weekly' (option C). This method would provide direct, quantifiable data about the mosquito population, showing changes on a weekly basis over the three-month study period.

A case study (option A) would not provide direct data about the mosquito population. Instead, it would provide indirect observations through the behavior changes of animals that prey on mosquitoes. Similarly, a survey (option B) relies on residents' subjective observations, which may not be reliable or accurate. Finally, a controlled lab experiment (option D) does not account for the plethora of variables present in a natural environment, thus limiting its effectiveness in this situation.

Learn more about Research Method here:

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Which of the following best describes a fission reaction involving lithium? (1 point)A. Two lithium atoms form bonds with each other, absorbing a large amount of energy. B. The nuclei of lithium atoms join together to form heavier isotopes, and energy is released. C. An atom of lithium absorbs electrons, undergoes an increase in energy level, and splits into fragments. D. The nucleus of an atom of lithium splits, resulting in smaller fragments and the release of a large amount of energy. Nuclear power plants produce a great amount of energy using fission reactors. However, there are safety risks. Which of the following risks are related to using nuclear power plants? (1 point) A. storage and disposal of radioactive waste B. production of radioactive atmospheric pollutants C. improper handling of volatile radioactive chemicals D. lack of adequate space to carry out reactions involving radioactive materials Which of the following natural resources does not contribute to global warming or air pollution? (1 point) A.coal B.natural gas C.nuclear power D.oil Which of the following statements about natural resources is correct? (1 point) A. Oil is more difficult to remove from the Earth than coal. B. Coal is present in small quantities compared to other fossil fuels. C. Natural gas has a limited supply and an uneven worldwide distribution. D. Nuclear power produces small amounts of energy from extremely large masses of fuel. Which of the following natural resources is considered non-renewable? (1 point) A. biofuel B. geothermal power C. nuclear power D. solar power Heat energy beneath the Earth's surface heats underground water into steam to operate steam turbines. This describes which of the following resources? (1 point) A. biofuel B. geothermal power C. hydropower D. nuclear power Which of the following is the most important challenge in the protection of our environment? (1 point) A. Getting society to care about environmental issues. B. Repairing long-term damage done to the environment. C. Cleaning up after a major polluting event, like an oil spill. D. Meeting society's needs while being responsible with natural resources. Which of the following chemicals is not an ozone-depleting substance in the stratosphere? (1 point) A. methyl bromide B.carbon tetrachloride C. xenon D. methyl chloroform Today we use synthetic polymers to replace natural materials such as cotton, wood, and stone. What is one disadvantage of using synthetic materials rather than natural materials? (1 point) A. Synthetic materials are often easy to produce. B. Synthetic materials often do not decay naturally. C. Synthetic materials are often much stronger than natural materials. D. Synthetic materials are often made from strong radioactive materials. Some technologies are now available to solve the problem of acid rain, which can alter the pH level of lakes and rivers. Which of the following is the best technology to improve a lake affected by acid rain? (1 point) A. new alternative energy sources B. recycling of materials to reduce air pollution C. an environmentally safe base to neutralize the lake D. transportation equipment to move all aquatic life to safety Which of the following human environmental accidents has had devastating effects on groundwater, rivers, oceans, and lakes? (1 point) A. harmful pesticides B. nuclear accidents C. ozone depletion D. oil spills When an oil spill occurs in an aquatic environment, what generally is the effect? (1 point) A. The ecosystem is damaged but quickly rebounds. B. No serious damage occurs since oil and water do not mix. C. The abiotic factors are seriously affected, but the biotic are unaffected. D. The whole ecosystem is negatively affected, and long-term damage may occur. Which of the following most correctly predicts the impact on the environment if sustainable practices are not followed? (1 point) A. The ecosystems of the world will be uniformly damaged, but they will rebound quickly. B. Natural resources will be depleted, and the negative impact may be too severe to recover. C. The environment will not be adversely affected because the ecosystem of the world is too large. D. Rain forests will be depleted, but the oceans will be preserved because of their geographical isolation. Heat pollution occurs when an aquatic environment experiences an increase in temperature, which can result in devastating effects to the ecosystem. Which of the following is a major cause of heat pollution? (1 point) A. airports and seaports B. farming and agriculture C. residential housing areas D. factories and power plants
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