There less air pressure at higher altitude because the molecules in the air lose mass and are less effected by gravity, significantly lowering their weight. Thus, option D is correct.
What is the mass percent?Mass percent is the mass of the element divided by the mass of the compound or solute.
Step 1: Calculate the mass of the compound.
mCH₄O = 1 mC + 4 mH + 1 mO = 1 (12.01 amu) + 4 (1.00 amu) + 1 (16.00 amu) = 32.01 amu
Step 2: Calculate the mass of hydrogen in the compound.
mH in mCH₄O = 4 mH = 4 (1.00 amu) = 4.00 amu
Step 3: Calculate the mass percent of hydrogen in the compound.
%H = (mH in mCH₄O / mCH₄O) × 100%
%H = 4.00 amu / 32.01 amu × 100% = 12.5%
The mass percent of hydrogen in CH₄O is 12.5%.
CO2 = 1.580 grams H2O = 0.592 grams Lookup the molar mass of each element in the compound Carbon = 12.0107 Hydrogen = 1.00794 Oxygen = 15.999 Calculate the molar mass of CH4O by adding the total masses of each element used. 12.0107 + 4 * 1.00794 + 15.999 = 32.04146 Now calculate how many moles of CH4O you have by dividing by the molar mass.
Therefore, There less air pressure at higher altitude because the molecules in the air lose mass and are less effected by gravity, significantly lowering their weight. Thus, option D is correct.
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Which compound forms when carbon dioxide diffuses and reacts with seawater?
A. Hydroxide ions
B. Carbonate
C. Bicarbonate
D. Carbonic acid
Answer:
It's D
Explanation:
When CO2 reacts with water first carbonic acid is produced. then this carbonic acid will transform to H+ and HCO3-.
BUT BECAUSE FIRST CARBONUC ACID IS PRODUCED SO CARBONIC ACID IS CORRECT.
hope you understand.
I need help with this pleas
Answer:
To maintain homeostasis within the cell
Explanation:
The function of the cell membrane is to maintain homeostasis (stable environment) within the cell.
A
Which organelles found in both plant and animal cells have the function of
assembling protein molecules from amino acids?
Vacuoles
B Ribosomes
с DNA
D Golgi bodies
Describe what happens in each phase of mitosis.
Answer:
Mitosis is divided into four stages.
Early, late, middle, and late.
Prophase – At this stage, the genetic material in the nucleus condenses, revealing duplicated chromosomes. The mitotic spindle begins to form outside the cell nucleus.
At this stage, the centrosomes of the chromosome pairs line up in the center of the cell. The spindle fiber attaches each genetic code centromere to the two poles of the spindle. Late stage – At this stage, genes segregate and migrate along the spindle fibers to the ends of the cell.
Telophase – At this stage, previously separate and condensed chromosomes begin to spread into a jumble of chromatin.
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Explanation:
I took the k12 test :D
The plants in the chaparral biome are __________.
A)
widely spaced to maximize water collection
B)
closely spaced to form dense ground cover
C)
generally deciduous
D)
adapted to heavy snowfall
Answer:
B) closely spaced to form dense ground cover
Explanation:
Just took the quiz and it was correct!
If the organisms in this food chain shown below were arranged in an energy pyramid, which organism would have the most available energy? C SRED producer decomposer primary consumer secondary consumer O producer O decomposer O primary consumer O secondary consumer
QUESTION 9
if a woman who is a carrier for Fragilex syndrome (an X-linked disorder) has children with a man who does not have the disorder, what chance do their
daughters have of being carriers of Fraglese
None
50%
25%
100%
Answer:
Daughters who are descendants of a woman carrier of Fragile X Syndrome and a healthy man will have a 50% chance of having or being carriers of the syndrome.
Explanation:
Fragile X syndrome has an autosomal dominant inheritance pattern, linked to the X chromosome. That is, someone with an altered X chromosome can either be a carrier or have the syndrome.
In this case, the mother is a carrier of the altered chromosome (X) while the father is neither a carrier nor has the condition (XY).
Cross X x XY
Alleles X Y
[tex]X^{f}[/tex] [tex]X^{f}[/tex]X [tex]X^{f}[/tex]Y
X XX XY
The couple has a 50% chance of having daughters, and of those daughters half (50%) have the chance of having an Xf chromosome, and being a carrier or suffering from the syndrome.
There are four mechanisms that can cause changes in the frequencies of genes in populations: mutation, migration, genetic drift, and natural selection. All four are mechanisms of evolutionary change. What is genetic drift?
A) In a population, it is the changes in allelic frequencies of a gene that are due to chance.
B) A random error/change in the DNA sequence. These may be inherited or occur in cells during the lifetime of the organism
C) Also known as gene flow. It is any movement of individuals and/or the genetic material they carry, from one population to another.
D) There is variation in any population differential reproduction occurs and over time a more advantageous trait exists in the population.
Answer: D
Explanation: i did it on usa test prep
Answer:D
Explanation:
What kind of rock is shown in the picture ?
How do you know what type of rock it is ?
Answer:
Sedimentary
Because it is made is sediments
Explanation:
got it right , edge 2020
The picture shown here is of sedimentary rock. It is visible so because of the identification features of a rock as shown in the image.
What is the formation of rock making process ?The process is that the soil and the sand that gets accumulated and together with the mud gets collected in order to form a hard mass by the passing of time called as rock.
The kind of rock identification is done on the basis of rock identification aspects that are decided for each type of rock that has been kept under observation. In sedimentary rock, the grains and the displacement of rock grains together gives a larger or smaller appearances.
The types of layers and mud particles joined together along with the ripple marks that have been put together shows the marks on the rocks.
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A woman with type AB blood has children with a man who has type o blood. What are the chances they will have a child with type o blood?
25%
0%
100%
50%
Answer:
The chance of a woman with an AB blood type and a man with an O blood type having a child with O blood is 0%.
Explanation:
A mother with blood type AB (AB) will pass either antigen A or antigen B to the offspring, while the father with blood type O (OO) will not pass any antigen.
The result of an AB X OO cross would be
Alleles O O
A AO AO
B BO BO
For this reason, the offspring of this couple will be
Blood type A (AO) 50%. Blood type B (BO) 50%. Blood type O (OO) none.Heredity of blood type depends on the presence of surface antigens on the erythrocyte membrane. Blood type O occurs in persons whose red blood cells do not possess surface antigens A or B.
Surface antigens are what determine blood type, so :
The presence of antigen A determines blood type A. Blood type B depends on the presence of antigen B. Blood type AB has both antigens.Blood type O has no antigens, and for blood type O to manifest, it must have both alleles for O.
A mother AB and father O cannot have offspring with blood type O.
what usally accompanies a cold spell in minosota
Answer: the polar jet stream is moving south
Explanation:
The force that pulls falling objects toward earth is called
Answer:
The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. An animation of gravity at work. Albert Einstein described gravity as a curve in space that wraps around an object—such as a star or a planet.
Which of the following is NOT an advantage of organic fertilizers?
O They quickly release nutrients for plant uptake
O They can increase water-holding capacity
O They can increase soil drainage
O They can decrease the runoff of nutrients into local water systems
Answer:
third one is not advantage of organic fertilizer
Answer:
They quickly release nutrients for plant uptake
Explanation:
Someone please help me on this one thanks
Answer:
25 degrees
Explanation:
if you look at the highest point and trace down, it goes to almost 25, so 25 results in the highest rate
Answer:
D
Explanation:
That is where the highest point is
12. Compare and Contrast the relationships between the speed of electromagnetic
and mechanical waves as they travel through different mediums. YOU must
write at least 8 sentences.
Answer:
Compare and Contrast the relationships between the speed of electromagnetic and mechanical waves as they travel through different mediums is explained below in details.
Explanation:
As per the mechanism, the waves can be distinguished as electromagnetic and mechanical waves. Electromagnetic waves are those fluctuations that have no mechanism to progress whereas mechanical waves demand a mechanism for their communication. Electromagnetic waves progress in a vacuum whereas mechanical waves don't have.
Which pair best matches a type of land cover with an appropriate land use?
A. Forestland
Growing crops
B. Developed land
Grazing livestock
O C. Urban land
Growing crops
D. Pastureland – Grazing livestock
Answer:
D.
Explanation:
difference between valley and plateu
Answer:
A valley is a landforms carved by a river where as a Plateu is carved via wind
Please answer the 5 questions thanks
Answer:
option A
Explanation:
because plants give oxygen
Answer:
Hey buddy, here is your answer. Hope it helps you.
Explanation:
1. 3rd option
2. 4th option
3. 1st option
4. 1st option
5. 4th option
A wheat plant that is light green in color is found growing in a field. Biochemical analysis reveals that chloroplasts in this plant produce only 50% of the chlorophyll normally found in wheat chloroplasts. Propose a set of crosses to determine whether the light-green phenotype is caused by a mutation in a nuclear gene or in a chloroplast gene.
Answer:
Set of crosses:
Wild-type male x light-green female
Light-green male x wild-type female
Explanation:
Chloroplast genes are inherited maternally and, therefore it would be expected to observe this mode of inheritance:
- Wild-type male x light-green female >> offspring 100% light green
- Light-green male x wild-type female >> offspring 100 % wild-type
Moreover, nuclear genes are inherited from both parents, and, therefore, in the case of complete dominance, it would be expected to observe the following results:
1- When wild type is dominant:
- Wild-type male x light-green female >> offspring 100% wild type
- Light-green male x wild-type female >> offspring 100% wild-type
2- When light-green is dominant:
- Wild-type male x light-green female >> offspring 100% light-green
- Light-green male x wild-type female >> offspring 100% light green
Which describes the particle or particles that are in the nucleus of an
atom? *
1. proton and electron
2.electron only
3.electron and neutron
4.neutron and proton
Nevermind! I don't know if you can delete your answer or not but I saw that mine was wrong. Sorry!
If a woman has both alleles in her body cells, what will her eggs contain?
If a woman has both alleles in her body cells, then her eggs will contain only one of the alleles. This is because during the formation of eggs, a process called meiosis occurs, which randomly separates and distributes the alleles to the daughter cells. Therefore, each egg will contain one of the two alleles that the woman carries.
What is allele ?An allele is a variant form of a gene that is responsible for the expression of a particular trait or characteristic of an organism.
If a woman has both alleles in her body cells, it means that she is heterozygous for that particular gene. This means that she has two different versions (alleles) of the gene, one inherited from each parent.
During the process of meiosis, which produces eggs, the two alleles will segregate, meaning that each egg will receive only one allele.
The allele that ends up in each egg is random and depends on the particular orientation of chromosomes during meiosis.
So, the woman's eggs will each contain one of the two alleles she carries, and there is a 50% chance that each egg will contain either allele.
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Which scenario best describes motion?
A.) a toy train in position 4 on a number line
B.) a race track that is 100 meters long
C.) a ball rolling from point A to point B
D.) a student living 150 miles from Chicago
- a diagram of a food chain in the Everglades
- a plastic replica of the human digestive system
- a mathematical equation for finding the speed of an object
Would Be A Example Of...
model
hypothesis
observation
experiment
what type of tide has the highest amplitude
Pls help i dont understand :( will give Brainliest + 25 points!!
Answer:
competition
Explanation:
because one die and the other lives
PLEASE HELP I NEED THIS QUESTION ASAP :((
Cancer cells are body cells that do not function properly, leading to abnormal growth. Which process does not function normally in cancer cells?
1. Osmosis
2. Cell cycle
3. Photosynthesis
4. Cellular Respiration
Answer:
cellular corrert me if I am wrong
Explanation:
have a nice day baby
Choose all the answers that apply.
The speed of evaporation _____.
decreases as temperature decreases
increases as temperature increases
increases as surface area increases
decreases as surface area decreases
Answer:
increases as the temperature increases
Explanation:
this this happens because when water gets hot it separates from his own molecules creating less friction from the water allowing it to evaporate faster as heat increases
Answer:
increases as surface area increases
Explanation:
Help I’m way behind and I need to catch up somone help please
Answer:
Turquoise lakes, ancient forests, and Rocky Mountains
Explanation:
Which organising consume dead organic matter
Answer:
saprophytes are responsible for consumption of decay or decid matter
Which of the following is a true statement about replacement-level fertility?
A) It equals the average number of children a woman will give birth to during her child-bearing years.
B
It equals the annual number of live births per 1,000 people in a population.
с
It equals the natural increase of a population in one year.
D
It is found by subtracting the number of emigrants from the number of immigrants in one year.
E
It is greater in countries with high infant-mortality rates than in countries with low infant-mortality rates.
Answer: It is greater in countries with high infant-mortality rates than in countries with low infant-mortality rates.
Explanation:
Replacement level fertility is referred to as the total fertility rate at which a population is being replaced from one generation to another generation. It should be noted here that fertility rate here refers to the average number of children born that a woman has.
The Replacement level fertility rate in most countries is around 2.1 children per woman. The replacement level fertility is greater in countries with high infant-mortality rates than in countries with low infant-mortality rates.
The correct option is E.