How many moles of methane CH4 are present in 5.6L of the gas at STP?

Answers

Answer 1

Answer: 5.6 L × 1 mol / 22.4 L = 0.25 moles

Related Questions

Molecule found in muscle cells: used for structure.
Which activity can occur without the use ofenergy?(1) contraction of muscle tissue(2) protein synthesis in a cell(3) active transport of minerals(4) movement of water across a membrane
Viruses can infect bacteria as well as other organisms. What does the virus inject into the bacterial cell?a. viral nucleic acid b. capsid proteins c. hormones d. tail fibers
An RNA sequence is shown below.AUGCCGAAACGU Which of the following statements describes how the RNA sequence specifies the production of an amino acid chain? (1 point) A. Each individual RNA base codes for a single amino acid. B. Each group of three RNA bases codes for a single amino acid. C. Each group of three RNA bases codes for an enzyme that helps join amino acids together. D. Each individual RNA base codes for the ribosome location where amino acids are assemembled
Give an example of a testable question that could be investigated:A non-testable question: _____

Which statement illustrates how human activities can most directly change the dynamic equilibrium of an ecosystem?Water pollution causes a decrease in fish populations in a river.
A hurricane causes a stream to overflow its banks.
Increased wind increases water evaporation from a plant.

Answers

The best answer would be the first statement. The first sentence which is 'water pollution causes a decrease in fish populations in a river.' illustrates how human activities can most directly change the dynamic equilibrium of an ecosystem.

Answer: Water pollution causes a decrease in fish populations in a river.

Explanation:

An ecosystem is a biotic community which includes abiotic (non-living) and biotic (living) components. The abiotic components includes water, sunlight, wind, soil and temperature whereas the biotic components includes the living beings such as plants, animals, microbes and other. The dynamic equilibrium of the ecosystem can be defined as the condition in which the abiotic factors of the ecosystem supports the life of the biotic factors without undergoing any drastic change which could negatively affect the population of living beings.

The river water is an abiotic factor which can be a habitat of large diversity of marine flora and fauna. The pollution of water could negative affect the population of the fish residing in the river. This will disturb the balance of ecosystem. As, in the ecosystem various species interact with one another to survive. Hence, the dynamic equilibrium will be changed.

What are nematocysts?

Answers

It is an explosive cell that is used for protection from predators or prey hunting by the species of the phylum Cnidaria

Differnces between prothrombin and fibrinogen

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hello!

prothrombin is a protein presented in blood plasma which is converted into active thrombin during coagulation

fibrinogen is a protein that helps with blood clotting

prothrombin turns into thrombin through extrinsic and intrinsic pathways which activates fibrinogen

if click “thanks” if this helps! :)

- emily

Name two circumstances which can result in genetic drift having a significant impact on a population. Explain each.

Answers

Genetic drift can have a significant impact on a population under various circumstances. Here are two common scenarios and their explanations:

1. **Founder Effect:** The founder effect occurs when a small group of individuals from a larger population migrates or colonizes a new, isolated area. These founding individuals have a limited genetic diversity compared to the original population. As a result, the genetic makeup of the new population is determined by the alleles carried by the founding individuals. Any rare alleles present in the founders may become more common in the new population, while other alleles may be lost. Over generations, this can lead to a significant change in allele frequencies within the population.

2. **Population Bottleneck:** A population bottleneck occurs when a significant portion of a population is suddenly and drastically reduced in size, often due to a natural disaster, disease outbreak, or human intervention. The surviving individuals have a limited genetic diversity, as they represent only a fraction of the original population. As a result, genetic drift can have a pronounced effect on this smaller population. Alleles that were once rare may become fixed (meaning all individuals in the population carry the same allele), and genetic diversity is greatly reduced. This can increase the risk of genetic disorders and reduce the population's ability to adapt to environmental changes.

In both scenarios, genetic drift is driven by chance events rather than natural selection. Over time, the effects of genetic drift can lead to a loss of genetic diversity and potentially impact the population's long-term survival and ability to adapt to changing conditions.

A test performed to determine if harmful genes are present in a fetus is
called :
A-diagnostic genetic testing
B- amniocentesis
C- carrier genetic testing
D- preimplantation genetic testing

Answers

Aminocentesis is a test where a sample of amniotic fluid is extracted from the sack surrounding the foetus and tested to see if there are any signs of abnormality.

Similarities between dna and rna

Answers

Both have phosphate-pentose back bone, as well as both have adenine, cytosine and guanine bases.

Other Questions

A few bacteria are placed in a nutrient solution. after several hours thousands of bacteria are present. which life activities are primarily responsible for this?

Plasmodium, the world’s most lethal parasite, causes malaria. The parasite enters thebloodstream through a mosquito bite, hiding in the human liver before invading red blood cells. Ultimately, millions of infected blood cells explode at once, causing fever and death in 3 million people a year worldwide. Source: Zimmer, February 12, 2001, “Animal Parasites – As Gross As It Gets,” “Science World,” pg 11. -- State one reason why Plasmodium is considered a parasite of humans. [1] -- State one negative impact on humans when the use of pesticides for mosquitoes is decreased. [1] -- If a large quantity of herbicide, a chemical that is designed to kill weeds, were accidentally spilled into a large lake, it could endanger all the organisms living in the lake. State one way the effects of killing the weeds in the lake could be destructive to populations of fish and other animals.

The only kind of muscle tissue that does not have striations is

The group of polar bears that live along the eastern coast of Russia makes up?