Taking into account the definition of dilution, the final concentration of NaCl in the solution is 0.04 mol/L.
DilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeFinal concentrationIn this case, you know:
Ci= 0.4 mol/LVi= 1 mLCf= ?Vf= 1 mL of aqueous solution of NaCl + 9 mL of water= 10 mL solutionReplacing in the definition of dilution:
0.4 mol/L × 1 mL= Cf× 10 mL
Solving:
(0.4 mol/L × 1 mL)÷ 10 mL= Cf
0.04 mol/L= Vf
In summary, the final concentration of NaCl in the solution is 0.04 mol/L.
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The Y chromosome is much smaller than the X chromosome. What does this mean?
A. The Y chromosome takes up much more space than the X chromosome.
B. The X chromosome has more genes than the Y chromosome.
Answer:
A. The Y chromosome takes up much more space than the X chromosome
What is the dependent variable that impacts the amount of solar energy in a location?
A. Latitude
B. Longitude
C. Prime meridian
D. Equator
What is the purpose of DNA inside a cell
Answer:
DNA contains the instructions needed for an organism to develop, survive and reproduce
Most of the air we breathe is made of what molecule?
A. Carbon dioxide
B. Water vapor
C. Nitrogen
D. Oxygen
Answer:
C. Nitrogen
Explanation:
The composition of air is as follows:
nitrogen 78%
Oxygen 21%
carbon dioxide 0.03 %
water vapour 0.2 to 0.4 %
Putting a prescription on file allows the prescription to be filled electronically and a ) charges the insurance company , but doesn't fill the order . b ) charges the insurance company , but sends the filled prescription to the patient's physician . c ) charges the insurance company , fills the order , but holds it until needed . d ) doesn't charge the insurance company or fill the order .
Putting a prescription on file allows the prescription to be filled electronically and sets the insurance company , but sends the filled prescription to the patient's physician.
What is the process of filling a prescription?
The prescription fill process has five detailed steps. They include input & initial check, therapeutic check, preparation, technical review and supply and educate. These focus on an objective and precise prescription filling process that is safe and legal for both the client and the pharmacist.
What is the main advantage of an electronic prescription?
E-prescribing also helps to make patient care more efficient. It simplifies the process of getting the medication to the pharmacy, dispensing the medication, and getting refills. Because the patient is not given a hard copy of the medication, the possibility for losing the prescription is eliminated.
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what is the source of mold on bread
Answer:
Well, mold develops and grows eventually forming a colony due to spores landing on the bread and multiplying, hence growing the mold.
Where does mold on bread come from?
On bread, molds (many colonies of various sorts) develop from microscopic fungi that float in the atmosphere.
The fungus that causes mold develops as extremely little filaments called hyphae, which enable the fungus to float and be transported by the air. The hyphae spread by forming an apparent, hairy network when they land on bread or other organic materials. The color of the spores that develop on the end of the hyphae determines the color of the mold network .There are molds that grow as single-cell spores as opposed to mold that grows as multicellular hyphae with a spore at the end. They are known as yeast.
Thank you,
Eddie
Why human, monkey, horses and birds are considered to have evolved from the same ancestors?
Answer:
Everything at some point belonged to a common ancestor, but these four species are considered to be like this because of similar ancestral traits that have been passed on to generations such a homologous pairs, vestigial structures, they are all mammals, similar amino acid sequences, vertebraes, etc.
The Montreal Protocol ________.
Answer:
The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).importance of protein in structure
Answer:
provide structure and support for cells. On a larger scale, they also allow the body to move. These proteins bind and carry atoms and small molecules within cells and throughout the body.
Explanation:
These proteins provide structure and support for cells. On a larger scale, they also allow the body to move. These proteins bind and carry atoms and small molecules within cells and throughout the body
please solve this for me
Carbohydrates and Fat - Energy-giving food
Proteins- Body-building food
Vitamin and minerals- Protective food
Dietary fiber- They help in easy digestion of food
Iodine deficiency- Causes the disease called goiter
Lack of Vitamin A- Causes loss of vision
What are Carbohydrates and fats?
Carbohydrates are the biomolecules that are present in our body and building blocks of several eating compounds(mainly sugars like starch, glycogen, etc.) These are the simplest biomolecules and are quick sources of energy.
Fat is a bit complex biomolecule that is present in our food in the form of oils and is also a component of our cell membrane.
What are vitamins and minerals?
These are the micronutrient that is required by our body for their normal functioning.
They are a kind of protective food for the proper functioning of our body parts.
What is Iodine deficiency?
Iodine deficiency occurs in our body due to a lack of vitamin D which causes goiter. To heal this deficiency doctor prescribes some vitamin d capsules and suggestion to take a sun bath.
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In the US, in an average year, 20% of people will help their parents with their printer and 50% will carefully place a spider outside. What is the probability of the population that will both help their parents with their printer and carefully place a spider outside? (Type answer as a probability between 0 and 1)
Answer:
The probability would be 0.
The probability of the population will be 0.
What are the different types of population ?
A discrete groups of individuals with identifiable characteristics called a population.
It consists of a same group of species resides in a particular geographical location and interbreed there.
In a population not all individuals are able to survive and reproduce because of genetic variations in them.
Finite Population or countable population in which the population can be countable.
Infinite Population or uncountable population in which the counting if the population is impossible.
Existent Population of concrete individuals, whose unit is available in solid form.
Hypothetical Population whose unit is not available known as the hypothetical.
Most of the populations are unstable due to the presence of various physical factors and it act as limiting factors against exponential growth.
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Emily has been asked to find out how
Temperature affects photosynthesis in water
weed. She has been given the equation:
light energy
glucose + oxygen
Carbon
dioxide
+ water
What should she investigate?
She should investigate how temperature affects the rate of oxygen production.
PhotosynthesisDuring photosynthesis, green plants make use of inorganic products in the form of water and carbon dioxide to synthesize carbohydrates. The reaction only happens in the presence of solar radiation and oxygen is evolved as a by-product.
The process involves a series of chemical reactions. However, the summary of the whole reactions is represented by the following equation:
carbon dioxide + water ----> glucose + oxygen
Thus, if Emily is to find out how temperature affects photosynthesis. She will need to use a plant as a case study. One factor that can easily be used to measure the rate of photosynthesis is oxygen production by plants.
In other words, Emily will have to set up an experiment where a plant species will be subjected to the same environmental conditions, except temperature. Then, a suitable method will be used to measure the amount of oxygen produced. Any difference in the volume of oxygen produced can then be attributed to the effects of temperature.
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Which of the following correctly defines sustainability?
O
о
Promotes and maintains conditions under which nature and
humans can co-exist indefinitely
Promotes the management of a variety of species in a particular
habitat
O The objective study of humans and their environment
O
The observation of interdependence among biological organisms
within a specific environment
Answer:
Promotes and maintains under which nature and humans can co-exist indefinitely
Explanation:
The ability to sustain something is known as sustainability.
ecology defines it as a means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present, while preserving biodiversity and natural ecosystems, planning and acting for the ability to maintain these necessary resources for future generations.
What is a hypothesis?
A. A random guess
B. An educated prediction based on knowledge
C. A theory
D. A way for scientists to make up lies
Give one function for this structure
Answer:
Explanation:
The pen is is the male organ used for urination and intercourse. The pen is located above the scrotum. It is made of spongy tissue and blood vessels. The shaft of the pen is surrounds the urethra and is connected to the pubic bone.
why factors of production are important in promoting south Africa's economic growth and development
If businesses can improve the efficiency of the factors of production, it stands to reason that they can increase production and create higher quality goods at lower prices. Any increase in production leads to economic growth as measured by GDP.
True or false? Genes that are very far apart from one another on the same chromosome may be indistinguishable from genes on separate chromosomes in genetic linkage studies.
O True
O False
This is true that Genes that are very far apart from one another on the same chromosome may be indistinguishable from genes on separate chromosomes in genetic linkage studies.
The probability of two genes inheriting together increased depending on how close they were to one another on a chromosome. On the other hand, genes on the same chromosome that were more apart from one another were more likely to be split apart during recombination.
Every time a pair of genes on a chromosome that far apart crosses over, an equal number of parental and recombinant chromosomes are created.
Linkage is the propensity for genes on the same chromosome to pass down their mutations together.
Unlinked genes refer to genes that are spread across various non-homologous chromosomes.
Linked genes are genes that are found on the same chromosome.
The tendency to display full linkage indicates that genes near to one another are highly related.
Different chromosomes' genes frequently have insufficient linkage.
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Which is not a water quality monitoring parameter?Select one:
a. habitat
b .turbidity
c. salinity
d. pH level
Habitat is not a water quality monitoring parameter.
There are three types of parameter used to determine the water quality.
Physical- Temperature, turbidity, Color and taste.Chemical- salinity, pH, COD and BOD.Biological- Most probable Number-MPN ( microbes) especially coliform bacterial count.Habitat is the one which doesn't comes under any of these three types, whereas turbidity is the physical parameter, salinity and pH are the chemical parameters used to check the quality of water
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Answer:
The answer is HABITAT.
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a student investigates the effect of different fertilizers on tomato plant growth. Identify the dependent, independent and controlled variables in her experiment.
Based on the nature of variables in the experiment:
plant growth is the dependent variablefertilizers is the independent variableSoil type and amount of sunlight is the controlled variablesWhat are variables?Variables in an experiment are those factors which are under the control of the researcher and in which changes in them result in changes in the result of the experiment.
In an experiment in which a student investigates the effect of different fertilizers on tomato plant growth, the various variables are given below:
plant growth is the dependent variable - this variable depends on a change in the independent variablefertilizers is the independent variable - changes in this variable results in changes in plant growthSoil type and amount of sunlight is the controlled variables- this variable is constant.In conclusion, tomato plant growth is dependent on the type of fertilizer.
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What could a scientist do to determine what era the Eocene period belongs to on the geologic time scale?
learn what happened during Precambrian time
study information related to the Cenozoic era
view the timing of events in the Mesozoic era
research events that happened during the Paleozoic era
The Eocene occurred during the Terciaty period. To determine the era the Eocene period belongs to, a scientist should study information related to the Cenozoic era. Option B).
What is the Cenozoic?The Cenozoic is an era that covers the period from 65 million years ago to the present.
Significant events during the period,
During this era, there is a decrease in temperature (which until that moment was significantly higher than the current temperatures) and begins an aridity process.Since most cretaceous plant species got extinct, there is significant radiation of angiosperm and their consequent domain on the ground.
Following this diversification, different insects evolve following the different types of plants. Coevolution and pollination acquire protagonism.
During this period, mammals radiated too, originating in the current region of China.
Occurs the evolutive radiation of teleosts and birds.
The Cenozoic era includes the tertiary and quaternary periods.
⇒ Tertiary
Paleocene (65-55 my ago)Eocene (55-33 my ago)Oligocene (32-23 my ago)Miocene (23-5 my ago)Pliocene (5-2 my ago)
⇒ Quaternary
Pleistocene (2-0.02 my ago)Holocene (0.02 - 0 my ago)Since the Eocene occurred during the Terciaty period (Cenozoic era), to determine what era the Eocene period belongs to on the geologic time scale, a scientist should study information related to the Cenozoic era. Option B).
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If a design has a flaw, what is next logical step for the design team?
Modify the design.
Test the prototype.
Scrap the project.
dentify the need.
Transpiration is
A. the process of water rolling down
hill.
B. when plants evaporate water into
the atmosphere from their leaves.
C. when oceans move water to
different climates.
Answer:
Should be B
Explanation:
prove me wrong
Answer:
b
Explanation:
for sure..
..........
Who do you believe is guilty of the murder? What evidence supports your conclusions? (4 points)
Right from time immemorial, guilty is considered a murder situation in as much as one as been confirmed truthfully responsible as what one as been charged of.
What is murder?This is a deliberate act of killing another being, especially human.This is a crime against humanity and it is punishable.
Guilty means to be responsible for a dishonest act especially judged to have committed a crime.
Evidence which shows that guilty is a murder is simply in the scriptural books such as the Bible and Qur'an. The judge in his book too has whatever one is guilty of as a murder in his book.
So therefore, right from time immemorial, guilty is considered a murder situation in as much as one as been confirmed truthfully responsible as what one as been charged of.
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Answer:
Steve O'Hare
Blood Type Match
Explanation:
The murderer was the boss, Steve O'Hare, because the blood on the door matched his blood, so he possibly struggled to kill her and she was able to hit him or try to defend herself which is possibly why his blood was on the door
The tyres of tractor are wide and large .Give reason.
Maybe this is the answer
Genotype: BBee
Phenotype:
DONE
V fur and
V eyes
[tex]black \: dominant = BB \\ phenotype = black \: fur \\ \\ red \: eyes \: recessive = ee \\ (not \: masked \: b y \: the \: dom \: trait) \\ phenotype = red \: eyes[/tex]
Answer:
Explanation:
Genotype: BBee
Phenotype:
✔ black
fur and eyes
red
A mixture of 2 substances can be separated by BOTH the methods given below.
Method 1 - by sieving the mixture through a mesh
Method 2 - by adding water to the mixture and then filtering it through a filter paper.
What can the mixture be?
Answer:
one solid insoluble substance
one solid insoluble substance other different size.
1. What effect does the music have on the murals as Sierra and Robbie danced?
Answer:
The impact of murals: the process and the paintings.
Which parts of a plant are responsible for reproduction? Describe the role that each of them will play.
Describe what occurs during the process of seed development.
Based on your knowledge of flowers, why do you think most flowers are bright in color?
The parts of a plant that are responsible for reproduction are the flowers, they are present only in the most evolved group of plants called angiosperms. Flowers can be hermaphroditic or monoecious when they have both female (carpels) and male (stamens) structures.
Describe what happens during the seed development process.Germination is a succession of stages that resume the development of the embryo and the beginning of the formation of a new seedling. We can summarize germination as the process of transforming the seed into a new plant. The seed consists of the embryo, endosperm and integument.
Based on your knowledge of flowers, why do you think most flowers are brightly colored?Are mainly related to pollination by animals. This is due to the fact that the flower acts as a form of attraction for pollinators, therefore, mechanisms are needed to guarantee the visitation of these animals.
With this information, we can conclude that flowers inherit their appearance through genes. Pigments are born in these plants, producing a range of colors across the spectrum. The same chemical, carotenoid, that produces the pigment in tomatoes and carrots also produces the yellow, red, orange colors in certain flowers.
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The truck carrying heavy loads have more tyre.Give reason.
Answer:
the load carrying heavy vehicles have large number of wheels so that the pressure on the road is reduced due to larger contact area.
Also, using large number of wheels ensures that the force due to the load is shared among the tyres and no single tyre is under stress.
Answer:
The truck carrying heavy loads have more tyres as it needs a larger surface area to keep the truck balanced.
Explanation:
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Which of the following is TRUE?
A. There is no relation between humans and monkeys.
B. A monkey decided one day to just stand up.
C. Humans and monkeys share a common ancestor.
