How are plastics formed?
Answers
Plastics are made from raw materials like natural gas, oil or plants, which are refined into ethane and propane. Ethane and propane are then treated with heat in a process called “cracking” which turns them into ethylene and propylene. These materials are combined together to create different polymers. Hope I helped!
Related Questions
cual es la diferencia entre capacidad termica calor especifico y calor latente
Answers
Answer:
El calor específico es el calor requerido para el proceso de cambio de temperatura de la sustancia, mientras que el calor latente es el calor requerido en el momento del cambio de fase de una sustancia.
Explanation:
This simulation contains rock layers and fossils from several different locations. Arrange the rock layers in the correct order, from the oldest at the bottom to the youngest at the top. Once a fossil disappears, it’s gone from the fossil record and does not reappear.
ill give brainlist if your answer is correct.
Answers
Answer:
The arrangement of fossil in the earth helps one understand the age of the rock.
Explanation:
To arrange the rock layers correctly, begin with the oldest layer at the bottom and proceed to work chronologically up.
The rock strata and fossils in this simulation provide information about the Earth's geological history. The theory of superposition helps us explain why the oldest rock layers are at the bottom and the youngest layers are at the top. We can establish the relative ages of the rocks by studying the fossils within each stratum. Fossils from earlier strata are no longer detected as new layers form, indicating that they have vanished from the fossil record and will not resurface. We can learn about the properties of the rock strata and the fossils they contain by carefully investigating their characteristics. We can reconstruct the timeline of Earth's geological past, understanding the changes that occurred over time.
Photo image please help science. WILL MARK AS BRAINLIEST
Answers
Answer:
endoplasmic reticulum is used to produce proteins for the cell to function
ribosomes is the site of protein synthesis in the cell
mitochondria release energy from food and is why it's called power house
cytoplasm it holds the components and protects the cell
Explanation:
my brain
Stephen pours a glass of ice water. He gets a phone call before he can drink it. What will happen if he leaves the glass on the counter for 2 hours?
a heat will transfer from the water to the ice until both reach the same temperature
b heat will transfer from the water to the ice until the water is colder than the ice
c heat will transfer from the ice to the water and the ice will stay colder than the
water.
d heat will transfer from the ice to the water and the ice will get warmer than water
Answers
Answer:
d im pretty sure
Explanation:
Identify all the correct examples of weather
Answers
Answer:
Here are some correct examples of weather:
Sunny and warm weatherRainy and humid weatherFoggy and cool weatherSnowy and cold weatherWindy and stormy weatherHazy and hot weatherThunderstorms and lightningHurricanes and tornadoesClear and crisp weatherOvercast and dreary weather.
Explanation:
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Hot water deep within Earth can _________________________ minerals and transport them someplace else.
Answers
Hot-Water Solutions Groundwater works its way down and is heated by magma, and then reacts with minerals to form a hot liquid solution. H. Dissolved metals and other elements crystallize out of the hot fluid to form new minerals, such as gold, copper, sulfur, pyrite, and galena.
Answer:
What happens to hot water beneath the Earth as it moves up through fractured rock?
Circulating groundwater that comes into contact with the cooling magma is heated and rises to the surface along rock fractures to form either a thermal spring, figmarole, or geyser.
Explanation:
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DOES a single population have a lot of genetic diversity in it when it is always reproducing together?
Answers
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
Answers
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
HELP! 100 POINTS! A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
Chemical Weathering Rocks are changed by chemical and physical weathering. During chemical weathering, the composition of the rock is changed. Extreme heat and pressure within Earth can also cause rocks to change chemically. Physical weathering is the breaking down of rock by wind, water, ice, temperature change, and plants. It changes the shape and size of rocks, but it does not change their properties.
circle each example of chemical weathering
•Shale is worn into small pieces by the wind.
• Sandstone experiences heat and pressure and becomes quartzite.
• Calcium carbonate dissolves.
• Rocks break into pieces as they tumble down a mountain.
Answers
An example of chemical weathering are;
Sandstone experiences heat and pressure and becomes quartzite. Calcium carbonate dissolves.What is Chemical Weathering ?Chemical Weathering can be described as the type of weathering that do take place due to the breaking down of the rock particles into smaller pieces which is usually as a result of chemical process.
It should be noted that when the process is taking place it scould be due to the Extreme heat and pressure which can affect the composition of the particles and as a result of this there could be formation of products from the break down.
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Sandstone experiences heat and pressure and becomes quartzite
Calcium carbonate dissolves
These are both examples of chemical weathering because the composition of these things changed. When shale is worn into small pieces, it is still shale, and rocks breaking into pieces as they tumble down a mountain are both examples of physical weathering because the weathering is not changing the composition of the rock.
I just need help all I need is the answer please some one
Answers
Answer: The correct fill-in-the-blank answers are:
1. through binary fission (already filled in)
2. be resistant to penicillin
3. through asexual reproduction.
4. cell replicates before
5. a simpler process
Explanation:
The correct fill-in-the-blank answers are:
1. Bacteria reproduce through binary fission (already filled in)
2. A parent bacterial cell is able to survive in the presence of antibiotic penicillin. Subsequent generations from this parent will be resistant to penicillin
3. Something that potatoes and bacteria have in common is that they both reproduce through asexual reproduction.
4. In asexual reproduction DNA from the parent cell replicates before it produces daughter cells.
5. Asexual reproduction is a simpler process than sexual reproduction.
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Can you help me please
Answers
Answer:
D
Explanation:
DDDDD
When we rewrite the given in a simpler unit we have 7.9 ms-1.
What is dimensional analysis of formulas?By looking at the units of the quantities involved, dimensional analysis is a technique for determining whether a physical equation or formula is right. The essential tenet of dimensional analysis is that the quantities being multiplied or divided in the equation must have units that are equal to the units of the final result.
We know that we have to apply the principles that apply to dimensional analysis in the question and we have that;
m^2.s/m.s^2
= ms-1
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Which object has the most kinetic energy?
A. a train that is stopped
B. a car moving at a slow speed
C. a train moving at a slow speed
D. a car that is stopped at the top of a hill
Answers
Explanation: kinetic energy means that the object is moving, automatically eliminating A and D since they are both stopped. The formula for kinetic energy is KE=1/2m(v^2) (m= mass and v= velocity). Since the train has more mass than the car, the train has more kinetic energy.
Research, find and display references (include a description and a picture) for water cycle, nitrogen cycle and carbon cycle. I have a project
Answers
Answer:
I hope this helps
Explanation:
help
Nicole has 2 glasses on the counter: one of water and one of sugar-water. She is baking a cake and needs to use the sugar-water for the glaze. Both glasses look identical, but one contains a mixture and the other contains a compound.
Is sugar-water a mixture or a compound? Define mixtures and compounds, and explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.
Answers
Answer:
sugar-water is a mixture not a compound.(homogeneous mixture.)
Explanation:
Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.
The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)
Answer: Nicole can take a small amount of sample from both of the glasses, she can place the samples in two separate containers and leave them out in the sun, so that the water gets evaporated. One of the two containers will contain a residue of sugar. The one containing the sugar residue, is the sugar-water solution.
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
which of the following statement is false?
A) The metal rods dipped in liquids to which cells are attached are called electrodes
B) The liquid which can conduct electricity by providing ions are electrolytes
C) Electroplating is the process of deposition of thin layer of desired metal on another substance
D) Positively charged electrode is called Cathode
Answers
Answer:
Positively charged electrode is called Cathode is false statement because it is called anode.
7: How many times can a volcano erupt?
Answers
Answer:
Some small volcanoes only erupt once in their lives,
while other volcanoes erupt multiple times. Kilaeua volcano in Hawaii, which has been erupting continuously since 1983, is the world's most active volcano. While some volcanoes erupt at regular intervals, there are always exceptions to the rule
Answer:
small volcano's only 1 time while big volcano's mutiple times
Explanation:
Which fossil fuel produces the highest levels of most air pollutants? *
Answers
A sample of liquid chocolate in a bowl is cooled in the refrigerator at a constant rate. Based on the graph, what is the melting freezing point of the chocolate?
28.5°C
23.5°C
25.5°C
Not enough information is given.
Answers
23.5°C would be the melting freezing point.
Select the correct answer.
Why are business organizations looking for professionals with journalistic skills?
A. to create quality content to connect better with customers
B. to diversify into the field of news reporting
C. to save on the overall cost of hiring
D. to hire ethical and honest professionals
Answers
no:A
is a correct answer
business want to bring quality content to their customers in order to appear more professional, that way they seem trustworthy so more customers buy from them.
If Vanadium has an atomic number of 23 and an atomic mass of 50.9425u, how many neutrons are in one atom of Vanadium?
23
28
51
Answers
Please help, I don't get what does this means
3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate:
Answers
Answer: hydrogen-carbonate.
Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.
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Water is one of the most important things to you, and to all living things. The fact that you can measure the volume of room temperature water with a beaker is a clue that room temperature water is in liquid form. If you keep raising the temperature of that water, it will eventually begin to boil, bubbling up and releasing steam. The steam is an example of what? *
Answers
Answer:
steam is and example of vapor and gas.
Answer:
evaporation
Explanation:
because the water boils and steam leave so it's evaporation
Questions int he photo, any absurd answers will be reported and person will get branliest if its correct.
Answers
Answer:
1.Neutrons
2.Protons
Explanation:
If not correct im very sorry
G
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still
able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
O liquid and solid
Mark this and return
Save and Exit
Next
Submit
Answers
Answer:
Solid and gas
Explanation:
Please help me with this
Answers
People use hot air balloons to rise high above the ground and be pushed by air currents from one place to another. The diagram shows a hot air balloon.
A type of chemical reaction, called combustion, takes place between propane and oxygen in the burners.
a. Describe a likely result of this chemical reaction that allows a hot air balloon to rise.
b. Describe a design feature the distance a hot air balloon can travel. Explain your reasoning.
Answers
Fueled by propane cylinders, gas jets produce the hot air that fills the envelope (similar to ones you might use on a portable camping stove).
WorkingSince heated air rises, hot air balloons are functional. with the rest. As though it were floating in water, the balloon rises as a result of this. The balloon naturally starts to slowly deflate if the air is allowed to cool.The molecules in the air start to migrate and spread out as the air within the balloon is heated, which results in a decrease in the air's density. The heated air is pushed below the cooler, surrounding air. the warm air is pushed upward as a result of this.For more information on hot air balloon kindly visit to
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what is the relationship between convince and suspect?
Answers
To convince someone means to persuade them to believe or do something. This involves gaining their trust and making them feel confident in your argument or proposal.
On the other hand, to suspect someone means to have doubts or distrust about their motives or actions. This involves questioning their credibility and being cautious about their intentions.
So, while convincing involves building trust and confidence, suspecting involves the opposite - doubting and being cautious.