Please help me calculate the increase in water, energy released in joules and energy released by 1g of bread in joules. Please and thank you!
Answers
Answer:
ohkii. . I will calculate it and then tell u the answers
Answer:
See attached
Explanation:
You want the calculated results from an experiment in which bread is combusted to heat water.
ComputationsThe temperature increase is the difference between the final temperature and the initial temperature:
∆T = T1 -T0
The energy released is the product of the increase in temperature, the mass of water (assumed to be 20 g), and the specific heat of water (about 4.184 J/g). You seem to be using a multiplier of (20 g)(4.184 J/(gK)) ≈ 84 J/K.
∆E = (84 J/K)∆T
The energy released per gram of bread is the released energy divided by the number of grams of bread.
J/g = (∆E)/(grams of bread)
These formulas are written into the attached spreadsheet. The results are shown.
__
Additional comment
The units of temperature difference for temperatures on the Celsius or Kelvin scale are "Kelvins" (K). Often, you will see 36 °C -21 °C = 15 °C. Technically, the difference is 15 K.
Related Questions
What do xylem vessels carry?
Answers
Answer:
xylem vessels carry water and minerals and some
ions also
Answer:
The xylem transports water and minerals from the roots up the plant stem and into the leaves.
Explanation:
In a mature flowering plant or tree, most of the cells that make up the xylem are specialized cells called vessels.
PLZ HELP ASAP. I DONT UNDERSTAND THIS
Answers
Answer:
b
Explanation:
b
Please Help brainiest for correctt and first answer
Answers
Answer:
B: to break down sugar and release...
Explanation:
Mitochondria is the powerhouse of the cell! It breaks down sugar that comes into the cell and releases it back into the cell as energy
flexibility is the ability to move joints freely through their full range of motion. which are structural limitations to movement? check all that apply.
Answers
Answer:
List the factors that limit flexibility. Which factors place the greatest limitations of flexibility?
Explanation:
Are due to the characteristics of bone;muscle; connective tissue within the joint capsule such as ligaments and cartilage;
When __________, inorganic ions required for the complete structure of the enzyme, are not incorporated into the enzyme structure, the remaining protein-only portion is called ______. coenzyme / holoenzyme
Answers
In a holoenzyme, inorganic ions required for the complete structure of the enzyme that is not incorporated into the enzyme structure are called coenzymes.
What is a coenzyme?The protein portion of a holoenzyme (i.e., a catalytically active enzyme) is called a coenzyme.
A coenzyme is a non-organic compound needed for the enzymes to have catalytic activity.
Inorganic ions are cofactors that may act during chemical reactions by activating the enzyme catalytic activity.
In conclusion, in a holoenzyme, inorganic ions required for the complete structure of the enzyme that is not incorporated into the enzyme structure are called coenzymes.
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Questions why is the heating in the Benedict's is test and millon test carried out in a water bath
Answers
The heating in the Benedict's test and Millon test is carried out in a water bath to maintain a constant and controlled temperature. This ensures accurate and reliable results by minimizing external factors that could influence the reactions taking place.
The Benedict's test and Millon test are both chemical tests used to detect the presence of reducing sugars, such as glucose, in a given solution. These tests involve a reaction between the reducing sugar and a reagent, which undergoes a color change in the presence of the sugar.
Heating is an essential step in both tests because it helps to facilitate the reaction between the reducing sugar and the reagent. By applying heat, the rate of reaction increases, allowing for faster and more reliable results. However, it is crucial to maintain a consistent and controlled temperature throughout the reaction to ensure accuracy.
A water bath is used for this purpose. A water bath consists of a container filled with water that is heated to a specific temperature, typically around 70-100 degrees Celsius, depending on the test being performed. Placing the test tubes containing the reaction mixture into the water bath allows the solution to be heated uniformly and consistently.
The water bath provides a stable and controlled environment, preventing sudden temperature fluctuations that could affect the reaction rate and, consequently, the test results. It helps to maintain the reaction at the desired temperature for a specified duration, ensuring optimal conditions for the reaction to occur.
By carrying out the Benedict's test and Millon test in a water bath, scientists and laboratory technicians can achieve reliable and reproducible results, allowing for accurate identification of the presence of reducing sugars in a given solution.
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When does a population experience logistic growth? options:A) When natural predators are introduced to the populationB) When it reaches the carrying capacityC) When there's primary successionD) When it has access to unlimited resources
Answers
The correct option is D) When it has access to unlimited resources. Logistic growth requires infinite resources to be sustained, it is common in primary succession, and microbes lab cultures.
A protein that has many hydrophobic r-groups pointing to the outside of the protein would be found:.
Answers
Answer:
hello there
Explanation:
embedded within the membrane
In your own words explain why you think it is hard to restore ecosystems to their original conditions once they have shifted. Why doesn't re-introducing predators always 'fix' the trophic cascade? To answer this, think about some of the changes you have seen in ecosystems around the world and even in Maryland. Why can't we always restore balance?
Answers
Answer:
This is because predators will find the easiest meals to snack on, even if that includes hunting down endangered or vulnerable species they're supposed to protect.
Explanation:
An example would be the Hawaiian mongoose case. If you don't know, mongoose are very popular due to their brave and aggressive nature, where they'll hunt pests down from rats eating on crop fields to even giant snakes in India that would other wise kill humans in a single venomous bite. This brought up the idea of bringing mongoose to Hawaii, since some rats were being a problem with their agriculture. So they brought 72 of them and started breeding them.
This immediately backfired as they caused many native birds and other native animals trouble as they were eating its eggs. There were so few mongoose hunting down the rats that it was rather better for them to not bring it in the first place. This is why today, Hawaii is very strict on what animal you choose to bring, even your own dog!
Another example would be the Australian dingoes. Except, this was unintentional. A few thousand years ago, their once-domesticated dog ancestors were actually abandoned by their owners from some Southeast Asian area and came down to Australia. They outcompeted existing predators such as the Tasmanian devils on Australia. They simply could produce and maintain more offspring than the Tasmanian devils. This caused the extinction of the last Tasmanian devils in the last couple of decades.
Although the dingoes aren't as bad as the mongoose, who ate everything they could find, as they hunted feral pigs as well as rare hunts on feral cats, they also eat the threatened native species they're meant to protect.
Last and very good example would be New Zealand, home to the most vulnerable birds: Kiwis and Kakapos. Although the taxonomy shows that they have individually evolved flightlessness, they both are vulnerable species. This is because, similar to the dodos, they didn't have predators to begin with. And you can't have a predator to attack the existing invasive species since they'll just snack up on the flightless birds as they're an easier snack anyways.
The more an ecosystem has been isolated, the harder it is to restore balance once invasive species have been introduced. Predators will not hesitate to try new food, such as kiwis. Think about it, if you walk into a pastry and see a new type of cake on display, you might as well give it a go. Predators are just too unpredictable that it's best to leave an ecosystem alone.
Onepage review on why understanding gas and vapors in a work setting is important and what we can do in our workplace to prevent accidents with gases and vapors.
Answers
Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.
In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.
Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.
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Convection currents are released from the land as it heats up during the day. True False
Answers
Answer:true
Explanation:
What is a difference between self-pollination and cross-pollination?
A. Self-pollination leads to the creation of a fruit. Cross-pollination does not.
B. During cross-pollination, ovules are carried from one plant to another plant.. During self-pollination the ovules stay on the same plant.
C. During cross-pollination the pollen grains are carried from one plant to another plant. During self-pollination the pollen and ovules are from the same plant.
D. During cross-pollination, the pollen grains travel from the stigma to the anthers. During self-pollination, the pollen grains travel from the anthers to the stigma.
Answers
Answer:
C. During cross-pollination the pollen grains are carried from one plant to another plant. During self-pollination the pollen and ovules are from the same plant.
Answer:
C. During cross-pollination the pollen grains are carried from one plant to another plant. During self-pollination the pollen and ovules are from the same plant.
Explanation:
What causes wind formation?
A: the constant density of air
B: the temperature differences in the hemispheres
C: the turning of circulating air vents
D: the movement of the earth on its axis
Answers
Answer:
its either "the turning of circulating air currents" or "A"
SORRY ITS BETWEEN THESE 2
Explanation:
Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air, making less pressure where it is warm than where it is cooler. Air always moves from high pressure to lower pressure, and this movement of air is wind.
Wind formation is the result of the temperature differences in the hemispheres. The correct option is B.
Temperature differences occur because of the unequal heating of the Earth's surface by the Sun.
Because of this, warm air rises from low-pressure regions where the surface is heated more intensively, while cooler air descends into high-pressure regions where the surface is relatively cooler.
We experience wind as a pressure gradient caused by air moving from areas of high pressure to areas of low pressure.
Option D mentioned how the Earth rotates on its axis influences wind production.
The moving air is deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere due to the Coriolis effect, which is brought on by the Earth's rotation.
Thus, the correct option is B.
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Which one of the following statements correctly describes the origin and insertion of a muscle?
A) The insertion is pulled toward the origin during contraction.
B) The origin is pulled toward the insertion during contraction.
C) The origin of a muscle is generally distal (farther from the body's mid-line) relative to the insertion.
D) The origin and insertion refers to the growth pattern of a muscle during development.
E) There is always a ligament at the origin of a muscle and a tendon at the insertion.
Answers
the origin and insertion of a muscle is: The origin is pulled toward the insertion during contraction.
Here correct option is B.
During muscle contraction, the fibers of the muscle pull on the insertion, causing movement. The origin of a muscle refers to the attachment point that remains relatively fixed or stable during contraction.
It is usually located closer to the body's mid-line or proximal to the insertion point. The insertion, on the other hand, refers to the attachment point that moves or undergoes displacement when the muscle contracts.
Therefore, during muscle contraction, the origin is typically pulled toward the insertion, resulting in movement at the insertion point.
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Glycogen synthetase kinase 3 beta is a protein kinase that has been implicated in many types of cancer. Depending on the cell type, the gene for glycogen synthetase kinase 3 beta (GSK38) can act ether as an oncogene or as a tumor suppressor. Which of the following best predicts how GSK 98 mutations can lead to the development of cancer? A Cells with inactive GSK 38 fail to trigger apoptosis. B Cells with inactive GSK 38 fail to proceed past the G2/M checkpoint. с Cells with overactive GSK 98 are more likely to repair DNA damage. Cells with overactive GSK 38 have longer cell cycles.
Answers
Answer:
A Cells with inactive GSK 38 fail to trigger apoptosis
Explanation:
Apoptosis is defined as the process of programmed death cell. Tumor cells are capable of evading apoptosis, thereby leading to uncontrolled cell proliferation. Glycogen synthase kinase 3 (GSK-3) is a protein kinase that phosphorylates serine and threonine amino acid residues on different substrates, thus activating different signaling pathways and having different biological functions. The GSK-3-mediated phosphorylation on different substrates may lead to the activation or inactivation of apoptosis depending on the cell type. Thus, GSK-3 has a dual activity and functions as a tumor suppressor and oncoprotein.
After the egg hatches, the amphibian breathes with gills and swims around in the water. What stage of the amphibian life cycle is this?
adult stage
larvae stage
egg stage
metamorphic stage
Answers
After the egg hatches, the amphibian breathes with gills and swims around in the water therefore the stage of the amphibian life cycle is larvae stage and is denoted as option B.
What is an Amphibian?This is referred to as a cold-blooded vertebrate animal which is characterized by having an aquatic gill-breathing larval stage followed by a terrestrial lung-breathing adult stage. Example of this type organism include frogs, salamanders etc and they don't undergo the pupa stage in their life cycle.
In the larval stages, they use gills to respire as they live in water and as the larvae grows and mature they develop lungs to respire on land. This is therefore the reason why they are able to survive in both aquatic and terrestrial environment and is therefore the treason why option B was chosen as the correct choice.
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why is a seed vault for the world important. 4 reasons why.
Answers
Answer:
It is important because it provides seeds when there are none left in the world
Individuals with high blood pressure are at a higher risk for:OOOOstrokeaneurismheart attackAll of these choices are correct.
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High blood pressure can place increased pressure on the walls of the blood vessels inside the brain, increasing your chances of developing an aneurysm. Also, it forces the heart to work harder to pump blood to the rest of the body. This causes the lower left heart chamber (left ventricle) to thicken. A thickened left ventricle increases the risk of heart attack, heart failure and sudden cardiac death. Moreover, blood vessels damaged by high blood pressure can narrow, rupture or leak. High blood pressure can also cause blood clots to form in the arteries leading to the brain, blocking blood flow and potentially causing a stroke.
So the correct answer is: All of thees choices are correct.
100 points help please
Answers
Answer:
a) The cell needs to maintain homeostasis.
Explanation:
A cell needs to regulate flow across the plasma membrane because, the cell needs to maintain homeostasis.
Homeostasis is a self regulating process. Thus, the option (a) is correct answer.
To investigate the influence of low soil water availability on photosynthesis, Klaus Winter and Joseph Holtum (2014) subjected a potted Clusia pratensis plant ...
Answers
To investigate the influence of low soil water availability on photosynthesis, Klaus Winter and Joseph Holtum (2014) subjected a potted Clusia pratensis plant to low soil water availability.
Photosynthesis is a process by which green plants and some other organisms use sunlight to synthesize foods with the help of carbon dioxide and water. The Clusia pratensis is a tree species that is native to tropical regions of South America. It is an important source of food and water for animals in these regions. In a study conducted by Klaus Winter and Joseph Holtum (2014), they subjected a potted Clusia pratensis plant to low soil water availability to investigate the influence of low soil water availability on photosynthesis.
Photosynthesis is a process that requires water, carbon dioxide, and sunlight to produce glucose. The glucose is then converted into energy that is used by the plant. In low soil water availability conditions, the plant may not have enough water to undergo photosynthesis. This can lead to a decrease in the plant's growth rate and productivity.In conclusion, low soil water availability can have a negative effect on photosynthesis and plant productivity. The study conducted by Klaus Winter and Joseph Holtum (2014) on a potted Clusia pratensis plant is a good example of this.
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Define aerobic respiration in detail.
Answers
Answer:
Aerobic respiration is the process in which oxygen is used to create energy from carbohydrates. This process is enzyme-controlled, and the energy stored is released during photosynthesis. This process has 4 stages; glycolysis, link reaction, the Krebs cycle, and last but not least, oxidative phosphorylation.
If water were a nonpolar molecule how would it’s properties be different
Answers
Which statement about aquaculture industry in the US is true?
Answers
The statement that the aquaculture industry in the US is growing is true.
The aquaculture industry, also known as fish farming, refers to the process of growing aquatic animals and plants under controlled conditions. The US is among the leading countries in the aquaculture industry. Aquaculture accounts for over half of the fish consumed globally. The following are some of the significant facts about the aquaculture industry in the US:1. Aquaculture accounts for around 20% of US fish production, with the rest coming from wild fisheries.2. The production of fish and shellfish in aquaculture in the US is steadily increasing.3. Catfish, salmon, and tilapia are the top three species produced in the US aquaculture industry.4. Freshwater species, such as catfish and trout, dominate US aquaculture production.5. The US aquaculture industry is concentrated in the southern states of Mississippi, Alabama, and Arkansas.
Therefore, the statement that the aquaculture industry in the US is growing is true. The US aquaculture industry has been experiencing steady growth over the years and is expected to continue to grow.
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which statment is the best example of how socaity affects the use of technology
A. People who sell cars make more money when the supply of new cars is low.
B. People who make a lot of money tend to buy new cars with the most modern features.
C. Researchers are developing solar-powered cars that can travel long distances.
D. Larger vehicles that use gasoline release more carbon dioxide than smaller gasoline-powered cars.
Answers
Answer: C. Researchers are developing solar-powered cars that can travel long distances
Which of the following elements is known as "nuclear ash" when it forms inside a star?
Select one:
a. Hydrogen
b. Helium
c. Silicon
d. Iron
Answers
Answer:
D- Iron
~+lil more info!+~
Iron is the ultimate nuclear “ash,” from which no nuclear energy can be extracted.
example of a body part that is made up of scaffold is
Answers
Answer: Kidney
Explanation: scaffolds are structures that mimic real organs.
Answer:
One example of a body part that is made up of a scaffold is the skeleton.
Explanation:
The skeleton is a structural system in the body that provides support and protection for the body's organs and tissues. It is made up of bones, which are connected to one another by joints. The bones of the skeleton are arranged in a specific pattern and shape, forming a scaffold that supports the body and allows for movement.
Other examples of body parts that are made up of scaffolds include the respiratory system, the circulatory system, and the musculoskeletal system. These systems are made up of a network of tubes, vessels, and muscles that provide support and function to the body.
how is the lion population declining over each 20 year period? explain how this is related to the decay factor.
Answers
As a result, if the lion population decreases over each 20-year period, the decay factor is probably stable or changing over time at a relatively gradual rate.
To draw more precise conclusions on the pace and pattern of population loss, further data on the specific lion population would be required. For instance, the following equation would predict the population after 20 years (or one generation) if a lion population had a starting population of P0 and the decay factor was r = 0.05.
Thus, the lion population would have decreased to about 37% of its original number after 20 years. The population will continue to shrink if the decay factor stays constant throughout time.
P(20) = P(0) x e^(-r x t)
P(20) = P(0) x e^(-0.05 x 20)
P(20) = 0.368 x P(0)
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What is an individual who has a recessive, disease-causing allele at a particular gene on one chromosome and a normal allele at that gene on the other chromosome?
A.An expressed individual
B.A carrier
C.A deleterious allele owner
D.Heterozygote individual
Answers
what word describes the position of the kidneys? question 15 options: sub-lumbar supercranial interabdominal retroperitoneal
Answers
The word that describes the position of the kidneys is retroperitoneal.
The kidneys are retroperitoneal organs, which means they are located behind the peritoneum, a membrane that lines the abdominal cavity.
The peritoneum covers the organs in the abdominal area, but the kidneys are positioned outside of this membrane.
The term "retroperitoneal" indicates that the kidneys are situated behind the peritoneum and are not covered by it. This anatomical position provides protection to the kidneys as they are located closer to the back muscles and the spine.
The other options given in the question are not applicable to the kidneys' position.
"Sub-lumbar" refers to the region below the lumbar vertebrae, "supercranial" pertains to a position above the cranium, and "interabdominal" is not a commonly used term in anatomy.
Therefore, "retroperitoneal" is the correct term to describe the position of the kidneys.
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Help me out with this question
Answers
Answer:
the answer is B, hope this helps
Explanation: