Answer:
7.1 sec
Explanation:
7.1 sec it take for a sound impulse to travel through a copper rod 25 kilometers long. 7.1 sec it take for a sound impulse to travel through a copper rod 25 kilometers long. This answer has been confirmed as correct and helpful.
pls mark me as brainliest trust me
Answer:
The answer would be 7.1 i think but this was already answerd so just saying that we both have gotten the same answer. But no matter what there is always a chanse that you can mess up.
Can you guys help me solve this?
Answer:
Ghethan,Haylei,Liam
Explanation:
Liam
Haylei
Ghethan
I think that's the answer they're going for.^
A gradual change over time in a species that enables the species to better survive in its environment is known as a(n)
A. adaptation
B. habitat
C. population
D. competition
Answer:
Adaption
Explanation: the definition of adpation is to learn how to survive or to learn what to do to be better or wtvr
What changes when you add a neutron to an atom?
a.
just the mass changes
b.
just the charge changes
c.
just the element changes
d.
the mass, the charge, and the element
____ drive(s) the process of cloud formation. A) Solar energy B) Greenhouse gases C) Global positioning D) Atmospheric pressure
Answer:
Atmospheric pressure
Explanation:
The higher the temperature or atmospheric pressure, the more water vapor the air can hold. ... Those particles provide surfaces on which water vapor can change into liquid droplets or ice crystals. A large accumulation of such droplets or ice crystals is a cloud.
11. Hay is made up of organic compounds. What are the main elements in many organic compounds?
Answer:
35
Explanation:
When a chemical reaction is balanced, what do you know about the atoms on each side?
PLEASE HELP THIS IS DUE IN 30 MINUTES!!!
Answer:
they are opposite, negative and positive
NEED HELP FAST
NO LINK ANSWERS
Identify the molecule shown by using the correct combination of the following terms:
Inorganic
Organic
Hydrocarbon
Provide the Chemical Formula for the molecule shown.
Identify whether this molecule is a monomer or polymer and explain your answer.
Answer:organic
Explanation:
All my questions are being "Deleted" for violating community guidelines by the same bots that scam you with the file. I swear- if it turns out the moderation team is scamming it's own site users.... (Not saying this is the case, but how does a scam 'bot' delete a question?)
Answer:
well im not sure why
Explanation:
but this one isn't deleted yet sooo
Please give an explanation for brainiest
Answer:
Neon
Explanation:Neon is stable as it has a full octet or valence shell of 8 electrons. If you are in year 11 or beyond, this will change, but I assume that you are still touching the surface of chemistry and learning that all noble gases (last group on the periodic table) have a full valence electron and "are happy," thus stabl
Which statement describes a characteristic of an evergreen coniferous tree?
can grow in the tundra
has cones and needle-like leaves
leaves change color in the fall
loses all leaves in the winter
Based on the diagram above, nitromethane has a chemical formula of CH
______ _____
NO LINK ANWERS
This is a fill in the blank question, there is no word bank
Answer:
Nitromethane, sometimes shortened to just Nitro, is an organic compound with the chemical formula CH
3NO
2. It is the simplest organic nitro compound. It is a polar liquid commonly used as a solvent in a variety of industrial applications such as in extractions, as a reaction medium, and as a cleaning solvent. As an intermediate in organic synthesis, it is used widely in the manufacture of pharmaceuticals, pesticides, explosives, fibers, and coatings.[12] Nitromethane is used as a fuel additive in various motorsports and hobbies, e.g. Top Fuel drag racing and miniature internal combustion engines in radio control, control line and free flight model aircraft.
Explanation:
Preparation
Nitromethane is produced industrially by combining propane and nitric acid in the gas phase at 350–450 °C (662–842 °F). This exothermic reaction produces the four industrially significant nitroalkanes: nitromethane, nitroethane, 1-nitropropane, and 2-nitropropane. The reaction involves free radicals, including the alkoxyl radicals of the type CH3CH2CH2O, which arise via homolysis of the corresponding nitrite ester. These alkoxy radicals are susceptible to C—C fragmentation reactions, which explains the formation of a mixture of products.[12]
Laboratory methods
It can be prepared in other methods that are of instructional value. The reaction of sodium chloroacetate with sodium nitrite in aqueous solution produces this compound:[13]
ClCH2COONa + NaNO2 + H2O → CH3NO2 + NaCl + NaHCO
if you help me ill give you brainiest
Answer:
A: in the cells of autotrophs
Explanation:
Autotrophs are organisms that can produce their own food using light
Answer: the answer is D
Explanation:
Plants release oxygen into the atmosphere during photosynthesis while respiration by plants and animals and the decomposition and decay of dead organisms releases carbon dioxide into the atmosphere.
Help me out, please.
Answer:
I'm going to have to say A
Explanation:
How can global warming cause sea levels to rise? Choose the best answer.
By causing it to rain more often
By melting glaciers and polar ice caps
By increasing the number of undersea volcanic
eruptions
By creating bigger and more powerful hurricanes
(10 points ) please help this is major grade .
Answer:
absorbed
Explanation:
because black absorbs the light around it
Answer:
The Answer is arsorbed
Explanation:
1.How does ethylene relate to polyethylene?
2.Which of the two molecules would most likely be a plastic?
3.Propose a simple process for how polyethylene is physically produced.
NO LINK ANSWERS
This is a written answer
Answer:
1.ansEthylene is at this point still a gas and needs pressure and a catalyst to turn it into polyethylene, a resin. The process by which polyethylene is made from ethylene is known as polymerization. ... Polymerization occurs when a chemical reaction causes molecules to react together to form polymer chains
2.ansPlastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptability, plus a wide range of other properties, such as being lightweight, durable, flexible, and inexpensive to produce, has led to its widespread use. Plastics typically are made through human industrial systems. Most modern plastics are derived from fossil fuel-based chemicals like natural gas or petroleum; however, recent industrial methods use variants made from renewable materials, such as corn or cotton derivatives.[1]
In developed economies, about a third of plastic is used in packaging and roughly the same in buildings in applications such as piping, plumbing or vinyl siding.[2] Other uses include automobiles (up to 20% plastic [2]), furniture, and toys.[2] In the developing world, the applications of plastic may differ; 42% of India's consumption is used in packaging.[2] In the medical field, polymer implants and other medical devices are derived at least partially from plastic. Worldwide, about 50 kg of plastic is produced annually per person, with production doubling every ten years.
The world's first fully synthetic plastic was Bakelite, invented in New York in 1907, by Leo Baekeland,[3] who coined the term "plastics".[4] Dozens of different types of plastics are produced today, such as polyethylene, which is widely used in product packaging, and polyvinyl chloride, used in construction and pipes because of its strength and durability. Many chemists have contributed to the materials science of plastics, including Nobel laureate Hermann Staudinger, who has been called "the father of polymer chemistry" and Herman Mark, known as "the father of polymer physics".[5]
The success and dominance of plastics starting in the early 20th century has caused widespread environmental problems, due to their slow decomposition rate in natural ecosystems. Toward the end of the 20th century, the plastics industry promoted recycling in order to assuage environmental concerns while continuing to produce virgin plastic. The main companies producing plastics doubted the economic viability of recycling at the time, and this is reflected in contemporary plastic collection. Plastic collection and recycling is largely ineffective because of the complexity of cleaning and sorting post-consumer plastics. Most plastic produced has not been reused, either being captured in landfills or persisting in the environment as plastic pollution. Plastic pollution can be found in all the world's major water bodies, for example, creating garbage patches in all of the world's oceans and contaminating terrestrial ecosystems.
Explanation:
3.ansPolyethylene or polythene (abbreviated PE; IUPAC name polyethene or poly(methylene)) is the most common plastic in use today[when?]. It is a polymer, primarily used for packaging (plastic bags, plastic films, geomembranes, containers including bottles, etc.). As of 2017, over 100 million tonnes of polyethylene resins are being produced annually, accounting for 34% of the total plastics market.[5][6]
Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene, with various values of n. It can be low-density or high-density: low-density polyethylene is extruded[verification needed] using high pressure (1000–5000 atm) and high temperature (520 kelvins), while high-density polyethylene is extruded[verification needed] using low pressure (6–7 atm) and low temperature (333–343 K). Polyethylene is usually thermoplastic, but it can be modified to become thermosetting instead, for example, in cross-linked polyethylene.
What effect do cows and other livestock have on global warming? Choose the best answer.
They eat trees and grass, which adds to global
warming
Their digestive systems produce methane, a powerful
greenhouse gas
Humans use lots of fossil fuels to cook the meat they
produce, adding to global warming
Livestock have high body temperatures and emit
infrared radiation, adding to global warming
Their digestive systems produce methane, a powerful greenhouse gas.
Cows produce methane gas as a byproduct of their digestive process.
Methane is an important greenhouse gas that has a significant impact on global warming. Methane has a very high warming potential as compared to carbon dioxide (CO2) in a shorter time period.
Methane released from livestock contributes a lot to the greenhouse effect and contributes to climate change.
Learn more about global warming here :
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What is causing the Earth's climate to change? (Choose the 2 correct answers)
Greenhouse gases.
Burning fossil fuels.
The Earth's climate isn't changing.
Hot house gases.
Answer:
green house gases and burning fossil fuels