How is an exothermic reaction identified?
A. It has a large heat of formation.
B. It uses electromagnetic radiation.
C. It requires heat as a reactant.
D. It gives off heat as a product.

Answers

Answer 1

Answer:

D

Explanation:

it gives off energy as a product

Answer 2
The answer is d. A exothermic reaction is identified by the heat it gives off a product

Related Questions

Select all the correct answers.
.
Which three statements provide reasons that scientists are considering renewable sources of energy?
re...
Most renewable resources are clean and nonpolluting.
Renewable resources can be replenished.
ооооо
O Renewable sources are conventional resources.
Most renewable resources are easily available in nature.
All renewable resources are cost effective.
Reset
Reset
Next

Answers

Answer:

C&D

Explanation:

I JUST DID THE TEST

The three statements which provide reasons that scientists are considering renewable sources of energy are as follows:

Most renewable resources are clean and nonpolluting.Renewable resources can be replenished.Most renewable resources are easily available in nature.

Thus, the correct options are A, B, and C.

What are Renewable sources of energy?

Energy sources that are renewable are defined as those that miraculously come from natural sources and are replenished or recharged more quickly than they are actually consumed.

These energy sources are based on the idea of sources which are continuously replenished more quickly. Most of the time, this energy is produced in a clean, non-polluting manner. Since renewable energy comes from natural resources, it is substantially cheaper or free to get renewable energy in nature.

Therefore, the correct options are A, B, and C.

Learn more about Renewable sources of energy, here:

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In 2011 and 2012, scientists working on the Banana River in Florida recorded a dramatic increase in the number of manatee deaths. Over the past 50 years, this area has also seen the human population increase by more than 500,000 people. It is believed that pollution from numerous sewage tanks leaked into the water, eliminating the manatees' food source, replacing it with an alga that is toxic to the manatee. This is an example of A) a natural cycle in an ecosystem B) the effect of increased biodiversity on an ecosystem C) human actions altering ecosystems with serious consequences D) direct harvesting in an ecosystem

Answers

Answer:

C) human actions altering ecosystems with serious consequences

Explanation:

The increase in the manatee´s death during 2011-2012 might be directly related to human actions.

The increase in the number of people during the last 50 years to more than 500,000 individuals, and probably the lack of policies and regulation, lead to an enhance in water pollution by sewage tank leaks.

Pollution probably caused a gradual decrease in the manatee´s principal source of food, which also caused an increase in the toxic algae population.

Algae caused the death of manatees as a consequence of human action that altered the natural ecosystem by polluting water.

oxygen transport in humans involves the bonding of oxygen with
A : white blood cells
b :platelets
C :Hormones
D Hemoglobin molecules

Answers

Answer:

i think it's d. hemoglobin molecules

Oxygen transport in humans involves the bonding of oxygen with hemoglobin molecules. Therefore, option (D) is correct.

Human oxygen transport is essential for delivering oxygen, a key gas needed for cellular respiration, to all tissues and organs. Haemoglobin molecules in red blood cells deliver oxygen.

Oxygen diffuses into the bloodstream and meets haemoglobin in the lungs. Oxyhemoglobin is formed when haemoglobin binds to oxygen molecules. Oxygen partial pressure and other factors affect reversible binding.

The heart pumps oxygenated blood via the circulatory system to tissues and organs. Oxyhemoglobin releases its oxygen, allowing cells to use it in cellular respiration to make energy. The mechanism efficiently supplies oxygen for metabolic needs. Life and physiological activities depend on this mechanism. Therefore, option (D) is correct.

Learn more about Hemoglobin, here;

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Which is true of hydroxide ions?

Answers

Answer:

Hydroxide ions are mainly basic or alkali with a pH greater than 7.

Explanation:

[tex] { \tt{formular : OH {}^{ - } }}[/tex]

Answer:

Hydroxide are basic and have pH greater than seven

A slab of bare rock is covered with lichens. In time, mosses cover the rock, followed by grasses, and finally by small shrubs and tree saplings. In this example, the lichens represent

a. pioneer organisms

b. secondary consumers

c. a climax community

d. a dominant species​

Answers

Answer: pioneer organisms

Explanation: they were present as the environment developed

If the following is the sequence of an mRNA, what would be the DNA
sequence?U ACCCGUUAA

Answers

A TGGGCAATT (I’m pretty sure that’s right. Correct me if I’m wrong. Hope that helps!)

Which of the following options is true for aerobic and anaerobic respiration? * The answer is between C and D​

Answers

Answer:

C

Explanation:

Can I get Brainliest? plz?

Answer:

C is the correct answer.

Explanation:

This is because aerobic does in fact release large amounts of energy as opposed to anaerobic, which releases very small amounts of energy. It isn't D because in anaerobic, the products are organic AND inorganic.

A pack of Ramboulet sheep were imported from Australia to Pakistan in November. After some days, various sheep were suddenly died. Remaining of them were carefully examined by an expert veterinarian who found that sheep were extremely weak with yellowish mucus membrane. Sheep were gasping and it was examined that some of them are anxiously looking at their belly. He prescribed some emergency drugs along with fecal examination. Results showed presence of large quantity of parasite oocytes approximately ranging from 145 -155 um in length and 85-95um in width. How will you proceed with diagnosis as veterinarian? What is differential diagnosis and lifecycle of parasite?

Answers

Answer:

Through medication.

Explanation:

First I will apply medication that kills the pathogen that is present in the feces as well as good feel to maintain the health of sheep which was weak due to the pathogens. I have to apply vaccines that kills oocyst that is responsible for this infection. A differential diagnosis refers to a list of possible conditions or diseases that could be causing your symptoms. It can be obtained from your symptoms, medical history, laboratory results, and a physical examination. We can find out the disease through the symptoms that we observe from physical examination.

What is the impact of life skill to you? A. To be able to create problems B. To be self assertive. C. To be influenced by friends D. To maximize risk in life situation.​

Answers

Answer:

To self assertive

Explanation:

Gives you confidence and advance on you're own personality and views.

A scientist claims that he has protected animal test subjects from a newly mutated virus using an experimental vaccine. The experimental vaccine was injected into five animal test subjects. The scientist also injected a placebo vaccine into five other animal test subjects. One month later, all of the test subjects were exposed to the mutated virus. The subjects that received the vaccination showed no sign of the disease and blood tests confirmed the presence of antibodies against the disease, but the subjects given the placebo developed symptoms of this condition. Why did one group have a placebo injected before being exposed to the virus? Choose 1 answer: Choose 1 answer: (Choice A) A They were part of the control group (Choice B) B They would be exposed to a weakened form of the virus (Choice C) C They would be protected from the disease (Choice D) D They were part of the experimental group

Answers

Answer:

A. They were part of the control group

Explanation:

In a scientific experiment, the CONTROL GROUP as opposed to the experimental group is the group that does not receive the experimental treatment. This acts as a standard for comparison.

In this question, the EXPERIMENTAL VACCINE is the experimental treatment or independent variable that was added. The five animal test subjects that was injected with this vaccine are called the EXPERIMENTAL GROUP while the other five test subjects that were rather injected with a PLACEBO are called CONTROL GROUPS.

Which statement is true about a species living in a homogenous environment compared to a species living in a heterogeneous environment? A species that lives in a homogeneous environment is more likely to exhibit phenotypic plasticity. The homogeneity or heterogeneity of an environment does not determine whether a species will exhibit phenotypic plasticity. Only a large population in a homogeneous habitat can exhibit phenotypic plasticity. A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity.

Answers

Answer:

A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity.

Explanation:

Phenotypic plasticity might be understood as the ability of a genotype to produce different phenotypes in response to varying environmental conditions.

Phenotypic plasticity needs epigenetic mechanisms to occur, which involve the genotype and the environment interaction to produce adapted phenotypic changes.

Epigenetic mechanisms produce changes in the expression of the genes, with no need to alter the DNI nucleotides sequences.

A heterogeneous environment imposes variability on genotypes that interact with it, producing different phenotypes. These phenotypes will vary according to environmental conditions.

. ¿Esta se encuentra constituido por un conjunto de
comunidades?

Answers

Ÿöu have to add 8 10 times the. You would get 80



Wolves are predators of deer. What is most likely to happen to the deer population if the wolf population increased? 0 stay the same increase decrease Obecome extinct​

Answers

Since wolves are indeed the main predator of deer, if wolves were to increase in their population, the population of the deer will inevitably decrease dramatically.

Hope this helps and if it does, don't be afraid to rate my answer as well as maybe give it a "Thanks"? (Or even better a "Brainliest"). And if it’s not correct, I am sorry for wasting your time, and good luck finding the correct answer :)  

If the wolf population were to increase, it is most likely that the deer population would decrease.

What is predator?

A predator is an organism that hunts and consumes another (the prey). This is known as predation.

Predators, in general, share the following characteristics: They are usually larger than their prey or, like ants, overwhelm them by attacking in large numbers.

If the wolf population increases, the deer population will most likely decrease.

This is because wolves are deer predators, and an increase in the number of wolves means more deer will be hunted and killed by wolves.

The deer population is unlikely to become extinct as a result of an increase in the wolf population because other factors such as disease, habitat loss, or human hunting can also have an impact on the deer population.

Thus, the population will decrease.

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What are water and carbon dioxide in the cellular respiration reaction?
CU
They are reactants because they are present before the reaction.
They are reactants because they are present after the reaction.
They are products because they are present before the reaction
They are products because they are present after the reaction
Save and Exit

Answers

Answer:

They are products because they are present after the reaction.

hope it helps

have a nice day

Which of the following provides the best summary of the process of natural
selection?

Answers

The best summary of the process of natural selection will be provided bythe option D that is genes are always passed from parent to offspring . Hence , out four inheritance is one of the option in the given question that is gene are passed from parent to offspring .

Translate the mRNA codons into the
amino acid sequence.

(DO put a comma and a space between the codons and make sure you spell out the names of amino acids!)

Answers

Answer:

mRNA sequence: AUG; GCU; AAU; UGU; UGA

protein sequence: Met-Ala-Asn-Cys-stop codon (Methionine-Alanine-Asparagine-Cysteine-stop codon)

Explanation:

Transcription is the process by which a fragment of DNA (e.g., a gene) is used as template to synthesize a complementary RNA sequence, usually a messenger RNA (mRNA) sequence that is then used to synthesize a protein by the process of translation. In RNA, Adenine bases are replaced by Uracil bases. During translation, each codon (i.e., each triplet of nucleotides of the mRNA) indicates a specific amino acid (according to the genetic code).  UGA, UAA, and UAG are stop codons that signal the end or termination of translation.

can anyone tell me hypothesis for eye disease...​

Answers

Answer:

Mostly radiations or dangerous products that come in contact with the eye For example, maybe harmful makeup product but there are many reasons for eye disease, you should elaborate more on dangerous product put on skin and harmful chemical

Explanation:

The pathophysiology of primary open-angle glaucoma is still largely unknown, although a joint contribution of vascular, biomechanical, and biochemical factors is widely acknowledged. Since glaucoma is a leading cause of irreversible blindness worldwide, exploring its underlying pathophysiological mechanisms is extremely important and challenging. Evidence from recent studies appears supportive of the hypothesis that a “glymphatic system” exists in the eye and optic nerve, analogous to the described “glymphatic system” in the brain. As discussed in the present paper, elucidation of a glymphatic clearance pathway in the eye could provide a new unifying hypothesis of glaucoma that can incorporate many aspects of the vascular, biomechanical, and biochemical theories of the disease. It should be stressed, however, that the few research data currently available cannot be considered as proof of the existence of an “ocular glymphatic system” and that much more studies are needed to validate this possibility. Even though nothing conclusive can yet be said, the recent reports suggesting a paravascular transport system in the eye and optic nerve are encouraging and, if confirmed, may offer new perspectives for the development of novel diagnostic and therapeutic strategies for this devastating disorder.

How did Darwin's observations on the Galapagos Islands lead him to the idea of evolution? Use the example of the tortoises mentioned above in your explanation.

Answers

Darwin observed a population of giant tortoises in the Galápagos Archipelago to have longer necks than those that lived on other islands with dry lowlands. These tortoises were “selected” because they could reach more leaves and access more food than those with short necks.

The products of cellular respiration are

Answers

Answer:

ATP, carbon dioxide, and water.

Explanation:

ATP, carbon dioxide, and water are all products of this process because they are what is created.

En cuáles de estos Cuerpos hay Células? Corcho, botella de plástico, pera, roca, sangre, vaso de agua.

Answers

Las células están en sangre

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. Scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. However, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. These global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. In Switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. Some biologists urge the collection of the few remaining individuals of some of the most threatened amphibian species, to preserve them if they become extinct in the wild. If such captive breeding programs could produce thousands of individuals from just a few of the remaining survivors, the species will still be threatened because of ______.

Answers

Answer:

a bottleneck effect

Explanation:

Genetic drift refers to the change in the allele frequencies in a population due to chance (random) events. The bottleneck effect, also known as population bottleneck, can be defined as a severe case of genetic drift caused by a drastic reduction in the population size. The bottleneck effect is well known to cause the loss of important genetic variation since alleles that were present in the original population are lost, thereby limiting its genetic diversity. One of the most common causes that may lead to a population bottleneck in a natural population is environmental disasters (e.g., earthquakes, floods, etc).

does anyone who took science 30 through the ADLC this year know if they locked the browser for the final?? they didn’t for the midterm

Answers

Answer:

Yea they did lock

Explanation:

What is the function of the organelles that are labeled F?

Answers

The organelle labeled 'F' in the given diagram is Endoplasmic reticulum. The main function ER is to move proteins and other substances through the

The radiometer is designed to be placed in a sunny window and as the sun's rays strike the blades, they spin. Which kind of energy powers this device?​

Answers

Answer:

Solar energy.

Explanation:

Solar energy is the kind of energy that powers the devices when the solar radiations strike on the blades of the radiometer. The device has the ability to change or convert solar energy into mechanical energy. Solar radiation is a natural resource from which clean energy can be formed that can be used for different activities in our daily life. There are certain cells that are present on the body of radiometer that produces energy needed for its running.

Human activities would have the least immediate impact on A. The formation of fossil fuels B. Coral bleaching C. Overpopulation D. Eutrophication

Answers

Answer:

A. The formation of fossil fuels

Explanation:

Human activities would have the least immediate impact on the formation of fossil fuels because the fossil fuels are not affected the formation of fossil fuels. The formation of fossil fuels takes millions of years because it is a very slow process. Human activities greatly affected the coral reef bleaching, over population and Eutrophication due to the release of pollutant gases in the atmosphere that greatly impact the environment.

can dna replication occur without proteins

Answers

Yes, Yes it can… Amino acids do make up dna though

In glycolysis, glucose is converted into two molecules of _____.

a. citric acid
b. oxaloacetic acid
c. pyruvic acid
d. Acetyl CoA

pls help cheif

Answers

Answer:

c

Explanation:

Enzymes split a molecule of glucose into two molecules of pyruvate (also known as pyruvic acid). This occurs in several steps, as shown in Figure below. In glycolysis, glucose (C6) is split into two 3-carbon (C3) pyruvate molecules. This releases energy, which is transferred to ATP

The risk index for a tsunami occurring in indonesia is 9.7 out of a maximum of 10 how could you prevent a tsunami from being a disaster ?

Answers

Answer: Protect yourself from the earthquake or volcanic eruption when it occurs because when this happens it is very likely that a tsunami will follow. Escape from the epicenter of the disaster, get as far away as possible from the water and get to a place as high as possible.

Explanation:

Indonesia is an archipelago of almost 20 thousand islands and it is located on the Pacific "Ring of Fire" which is a region where many volcanic eruptions and earthquakes occur independently of other events in other parts of the Ring. This means, Indonesia is vulnerable to volcano eruptions and earthquakes that eventually will cause tsunamis.

A tsunami is a complex event involving a group of waves in water of high energy and variable size that occurs when a large body of water is vertically displaced by some extraordinary phenomenon, for example, an earthquake, volcanic eruption, landslides, underwater detonations, meteorite impact, glacial ice slides, and others. So it is generated by the displacement of water.

The rist index for a tsunami to occur there is 9.7 of 10, this means that such an event is highly likely to occur. Since it is a natural phenomenon, there is no way to prevent it, however, there are several actions to take into account to avoid suffering major damage when this happens. This basically consists of protecting yourself from the earthquake or volcanic eruption when it occurs because when this happens it is very likely that a tsunami will follow. So you have to take it as a warning sign to flee in time. The most important thing is to escape from the epicenter of the disaster, logically get as far away as possible from the water and get to a place as high as possible, such as a mountain. It is necessary to be aware of the news and warnings to monitor the situation.

What is the work done when a force of 5 N is applied to a ball and it moves 80 m?

Answers

Answer:

400Joules

Explanation:

the total work done to be calculated is Force× Distance

:f×d=W

80×5=320J

20.
Wheat can vary in color from white to dark red depending on how much red pigment is present. Which genotype will produce the darkest wheat?
AaBBCC
aabbcc
AaBbCc
AABBcc

Answers

Answer:

AaBBCC

Explanation:

I think this is it. Hope it helps

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Epidemiology can you help me notice what incident rate this data set is ? Line x line y find the measures of angle 4 PLS HELP Discuss the phenomena of sunrise and sunset seen on Earth and describe how they will be different from the perspective of outer space. YOU WILL GET POINTS IF U DO THIS PLSSSSSS Does the number of cell layers or the cell shape play a role in the function of the epithelial tissue The area of a triangle is 30 square centimeters and its base is 10 cm. What is the height in cm of the triangle .What is the next number:1,2,4,7, 28, 33, 198,? Use the universal law of gravitation to solve the following problem.The force of gravity between Jake and his daughter Annika is 1.67 109 N. If they are 11 m apart and Jake has a mass of 110 kg, what is Annika's mass?a. Write out the formula for this problem. b. Plug in the values from this problem into the formula. c. Solve the problem, writing out each step. d. Correct answer DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that __________.DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that __________.chimpanzees evolved from humanshumans evolved from chimpanzeesconvergent evolution led to the DNA similaritieshumans and chimpanzees share a relatively recent common ancestor ngha ca cuc cch mng t sn php th k 20 l g A population of tree frogs lives in an area that has many types of plants and trees. The skin of most of the frogs is gray, which blends in better with the bark of trees than with the leaves of plants. Some of the frogs have skin that is greener in color, which blends in better with grasses and leaves. Snakes and birds are predators of the frog. Humans have come to the area and are beginning to cut down the trees. Describe the probability of survival for the three frogs of each genetic variation of skin colour if most of the trees are cut down. Use evidence in the paragraph to support your answer. Convert 3.5 104 to standard form. Calculate the total surface area and the volume of a cone of base diameter 9cm and slant height of 12cm Fill in the blank with the word that best completes the sentence.Someone from los Estados Unidos is called _____.sudamericanoestadounidenseestadounideoestadao A 5.0-kg solid cylinder of radius 0.25 mis free to rotate about an axle that runs along the cylinders length and passes through its center. A thread wrapped around the cylinder is weighed down by a mass of 2.0 kg so as to unwrap and make the cylinder rotate as this mass falls. Ignore any friction in the axle. If there is no slippage between the thread and the cylinder, and the cylinder starts from rest (a) Calculate the velocity of the block after it has fallen a distance of 2.0m. Give your answer in m.s (b) Calculate the total work done by the rope on the cylinder after the block has fallen a distance of 2.0 m. Give your answer in Joule. In parallelogram GHJK if mGHJ=140 find m KGH. Julie borrowed 3500 for 3years at a seven and a half simple interest rate how much interest rate is that Salut! Pouvez-vous maider?Dans l'acte 3 scne 5 qu'prouve roxane a la fin de la scne dabs le livre de cyrano de bergerac Enter an indirect object pronoun to correctly complete the sentence.Mi pap quiere comprar _______ mucho regalos a m. a stranger man was watching us (into passive) A colorblind woman (it is the recessive trait) marries a man with normalvision. What are the odds that their children are color-blind? The gene islocated on the x chromosome.A) 0%B) 25%C) 50%D) 100%