Answer:
34.88 %
Explanation:
To solve this question, we are going to assume that the acetone has 100% solution.
We know that 15 L of acetone was added to 28 L of water
We need to determine the percent by volume of a solution as
15 L of acetone/ (15L of acetone +28L of water)
= 15L/43L
=0.3488
= (0.3488×100%)
= 34.88 %
Hence, the percent by volume of a solution formed is 34.88
Please fill in the blank to answer the question.
At Position D, the Sun's most direct rays are hitting the ________ on Earth.
Answer: equator
Explanation:
i hope this is right
What cells combine to make the first eukaryotic cell?
Explanation:
Eu" means "true," and eukaryotes have DNA arranged in chromosomes and encased in a nucleus. Fossil evidence indicates that prokaryotic cells first existed on the earth, prior to the arrival of the eukaryotes.
With regards to acquiring food, most cnidarians are:
a. Filter Feeders.
b. Parasites.
c. Carnivores
d. Bottom Feeders
Answer:
the are carnivores
Explanation:
They use toxins to capture food
hope this helps...
Skin color shows a gradation of colors. Is this is a qualitative or quantitative trait? Why?
What pattern of inheritance do we see in skin color?
_____ is a molecule of oxygen with
_______oxygen atoms instead of 2.
Answer:
Ozone, 3.
Explanation:
Ozone is a molecule of oxygen with 3 oxygen atoms instead of 2 that is present in the atmosphere of the earth. It is a very important gas because this gas filter the solar radiation from ultra violet radiation which causes skin cancer disease. Ozone is present in the stratosphere layer of atmosphere that is present between 15 to 30 kilometer high from the earth surface.
3. True or false: Science aims to answer TESTABLE claims.
Answer: True
Testable claims, or verifiable claims, are claims where we can prove them true or false. We do so by gathering/observing data, then afterward we see if the data fits the claim or not. If not, then we adjust the claim or we throw it out entirely.
what happens to the body cells if the kidney produce very little urine?
Explanation:
Having filtered out small essential molecules from the blood - the kidneys must reabsorb the molecules which are needed, while allowing those molecules which are not needed to pass out in the urine. Therefore, the kidneys selectively reabsorb only those molecules which the body needs back in the bloodstream.
Answer:
Having filtered out small essential molecules from the blood - the kidneys must reabsorb the molecules which are needed while allowing those molecules which are not needed to pass out in the urine Therefore the kidneys selectively reabsorb only those molecules which the body needs back in the bloodstreamThe kidneys remove waste products in a process called
Answer:
The kidneys remove waste products called urea from the blood through nephrons. Nephrons are tiny filtering units. There are about one million nephrons in each kidney.
Explanation:
Answer:
i believe the answer is urea
Explanation:
The kidneys remove waste products called urea from the blood through nephrons. Nephrons are tiny filtering units. There are about one million nephrons in each kidney. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule.
The nitrogen bases down the center are held together by
Answer:
Hydrogen Bonds
Explanation:
The nitrogen bases are held together in the center of the molecule by Hydrogen Bonds. The type of sugar found in DNA is Deoxyribose.
Answer:
hydrogen bonds
students have a mixture of small iron filings and grains of sand that are about the same size. how can the students most easily separate the parts of this mixture?
A. By dissolving the sand in water
B. By picking out the grains of sand by hand
C. By using a magnet to attract the iron filings
D. By using a screen to filter out the iron filings
Answer: c
Explanation:
How many atoms of carbon, hydrogen, and oxygen are there in the reactants of photosynthesis?
Answer:
The reactants have one carbon atom, four hydrogen atoms, and four oxygen atoms. IN HYDROGEN ATOMS It takes six atoms of carbon (C) and twelve atoms of hydrogen (H) to make one molecule of glucose (C6H12O6). These atoms come from carbon dioxide (CO2) and water (H2O). IN OXGYEN It takes six atoms of carbon (C), six atoms of oxygen (O) and twelve atoms of hydrogen (H) to make one molecule of glucose (C6H12O6).
In photosynthesis, the reactants have one carbon atom, four hydrogen atoms, and four oxygen atoms.
What do you mean by photosynthesis?Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants. After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
Learn more about photosynthesis:
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Several factors determine the distribution of biomes on the planet. Which factor is considered most important?
A. weather
B. temperature
C. altitude
D. precipitation
Answer:
B
Explanation: i hope this is the answer
From the equator to the poles, the temperature of the Earth's surface normally drops. A biome's moisture content is influenced by both precipitation and evaporation, hence option B is correct.
What are biomes?Climate is the most important abiotic factor affecting the distribution of terrestrial biomes.
Temperature and precipitation are the primary determinants of plant growth. The plant will be discovered at that temperature and precipitation will be determined by the biome's temperature.
A biome's climate is mostly determined by the forms of life that exist there. Latitude, geographic characteristics, and atmospheric processes that disperse heat and moisture are only a few of the variables that affect climate. Scientists disagree on the number of distinct biomes that exist.
Therefore, temperature determines the distribution of biomes on the planet.
Learn more about biomes, here:
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Explain an example of how artificial selection can help solve human problems.
Answer:
Artificial selection can help solve human problems since humans can choose the desired traits of an organism to coordinate with their needs.
Explanation:
Since artificial selection is predictable, it is easier for humans to "customize" the traits of an organism to get a desired trait.
i think it’s B but not sure need sum help plz!
Below is one of the food chains in an ocean ecosystem.
plankton
-
shrimp mackerel tuna
Which of these statements is a scientific question that might be asked about
this food chain?
A. Do tuna swim faster than mackerel when they are hunting food?
B. How would a loss of tuna from this ecosystem affect the amount
of plankton?
C. How many more tuna live in this ecosystem than mackerel?
D. Do shrimp eat more plankton or more mackerel in one day?
Someone answer plssss
Answer:
parent cell diploid cells
Explanation:
Answer:
1. mother cell
2. daughter cells
Explanation:
I hope that helps!
MATURE OVULE FORM _____ WHICH ARE LOCATED IN LOCULES
1.FRUIT
2.SEEDS
3.STEM
4.ROOTS
Answer:
2.seeds
Explanation:
A DNA molecule with the base sequence A-G-C-T-C-A was used as a template for the synthesis of
a messenger RNA molecule. Which base sequence correctly represents the corresponding portion
of this RNA molecule?
Answer:
A-G-C-U-C-A
Explanation:
A-G-C-U-C-A is the base sequence correctly represents the corresponding portion of RNA molecule if DNA molecule with the base sequence A-G-C-T-C-A was used as a template. It is because the RNA molecule is formed from the same bases used in DNA except thymine. In RNA molecule, instead of thymine, uracil is attached with other nucleotide bases.
Hello, can someone please help me with this!
Explanation:
Reconstruction was the period in the united states during which the Civil war took place and the laws were made to provide equity to the slaves ending slavery.
The problem arises due to the reunion of the 11 states of the South to the Union which seceded earlier. Slavery was more practised in the Southern states compared to Northern states.
The Republican party did corruption from 1869 to 1877 which allowed due to which they lost their election of 1877.
In 1877, a special electoral commission was established in favour of Hayes and Democrats took benefits of this condition.
When Hayes was selected, he withdrew the federal troops from the South which allowed the Democrats to gain their seats in South and ended Reconstruction.
PLEASE ANSWER THISSSSSSSD
Answer:
D. Carbon dioxide + waterExplanation:
I hope it helps ❤❤In snapdragon the gene that affects flower color has two alleles: red (R) and white (W). In heterozygous individuals, the phenotype is pink. If two pink flowers were crossed what would be the probability of a pink offspring?
A. 25%
B. 50%
C. 75%
D. 100%
Answer:
The correct answer is - 50%
Explanation:
In the heterozygous condition, there is always one allele of dominant and one allele of recessive present together and during gamete formation, they assort independently. The probability of the pink flower that is RW can be found by punnet square:
R W
R RR RW
W RW WW
here, out of four two cases is of heterozygous or pink flower so the ration would be 2/4 or 1/2 or 50%
In the USA, many people want to cut their
body mass. Suggest why they
Suggest why they are advised to
avoid cheese.
Answer:
EATING CHEESE, BUTTER AND CREAM CAN HELP PROTECT YOU FROM HEART DISEASE, STUDY FINDS
Explanation:
just do the first one and if you don’t know it don’t answer please this is due today
Which is NOT a form of electromagnetic radiation?
A.
radio waves
B.
sound waves
C.
x-rays
D.
gamma waves
Answer:
Sound waves
Explanation:
How is fitness related to genes?
a. Animals with higher fitness have a better chance of
passing their genes on to the next generation.
b Animals with higher fitness make better and more
useful genes.
c Animals with lower fitness have a better chance of
passing their genes on to the next generation.
Need a Hint?
d. Animals with higher fitness use their genes more
efficiently.
Answer:
b
Explanation:
Genes passing to the next and third generation
fungus needs water and minerals salts ro grow up ? is this true justify
please help me answer!!
1. The arrangement of the phospholipids that make up the cell membrane is referred to as the _______
2. A carbon atom has 6 protons but has 7 neutrons this carbon atoms would be called a _______
Answer: 1. phospholipid bilayer 2. This is carbon-13, an isotope of carbon
Explanation:1. Two layers of phospholipid form the membrane, with their hydrophilic ends inwards. The hydrophobic surfaces protect the cell from osmotic changes by isolating the cytoplasm from the environment - except for embedded transport mechanisms for moving ions and molecules in and out as required.
2. C-13 is a rare, stable isotope of carbon, making up about 1% of natural carbon.
An element is defined by the number of protons in the nucleus, because the number of protons is matched by the number of electrons in the nucleus, and it is the electrons that determine chemical properties. Nuclei with more than one proton (i.e. not H) also have neutrons, which have no charge. They assist in keeping the positive protons together in the nucleus and are important for stability. Atoms of an element can have different numbers of neutrons, more than one of which can be stable. This variants are called isotopes. They behave the same chemically, but have some different physical characteristics due to size difference.
There are minimum and maximum limits to the number of neutrons that form stable isotopes. Beyond those limits, the atoms tend to decay through radioactivity. For example C-12 and C-13 are stable isotopes. Another natural isotope C-14 is radioactive.
There is also a limit to the number of protons that can be held together by any number of neutrons. Uranium, with 92 protons, has only radioactive isotopes, but U-238 (146 neutrons) decays much more slowly than U-235 (143)or U-234 (142).
6. A plant, like an oak tree, uses which organelle to perform photosynthesis? (LT#2)
A. chlorophyll B. chloroplast C. mitochondria D. nucleus
Answer:
b
Explanation:
Chloroplast which is are only found in plant cells and algal. The chloroplast has a very high concentration of chlorophyll. The chloroplast is the cell organelle that produces energy by using photosynthesis.
Answer:
B. chloroplast
Explanation:
.If two organisms are in the same phylum, they must also be in the same
a. class
b. species
c. family
d. kingdom
Answer:
D: Kingdom
Explanation:
I am an entomologist intern and a junior in highschool, I was also top of my class in biology 7th and 10th grade. The order goes Domain, Kingdom, Phylum, Class, Family, Genius, Species. Hope this helped.
Give the amino acids for the codes: CAA, GAC, UAC, AAA, GUA. Please answer ASAP