Answer:
l -Ascorbic acid is freely soluble in water (300 g/L at 20°C), difficult in alcohol (20 g/L at 20°C) and insoluble in chloroform, ether and benzene. It forms a clear colorless to slightly yellow solution. It has two pKa values: 4.2 and 11.6. The pH of a 5% (w/v) solution in water is 2.2–2.5 [9].
Explanation:
hope this helps if so please brainliest
Merry Christmas
l -Ascorbic acid is freely soluble in water (300 g/L at 20°C), difficult in alcohol (20 g/L at 20°C) and insoluble in chloroform, ether and benzene. It forms a clear colorless to slightly yellow solution. It has two pKa values: 4.2 and 11.6. The pH of a 5% (w/v) solution in water is 2.2–2.5 [9].
Which of these elements has an electron structure most similar to that of element X?
Answer:2
Explanation:
Can natural selection occur? Why/why not?
Answer:
The reason why it occurs is when the organism doesn't have the desirable traits it needs to survive.
Explanation:
In starfish, the allele for brown coloring is dominant, and the allele for blue coloring is
recessive. For which parental genotypes are 100% of the offspring expected to be blue?
BB x bb
Bb x Bb
bb x bb
BB x BB
Answer:
C. bb x bb
Explanation:
B B B b
b Bb Bb B BB Bb
b Bb Bb b BB bb
100% Brown 75% Brown 25% Blue
B B b b
B BB BB b bb bb
B BB BB b bb bb
100% Brown 100% Blue
5. How can a scientist determine the magnification of a specimen that is being viewed under the
microscope?
a. all specimens are viewed at 100X magnification on a microscope
b. The adjustment knob will tell the scientist the magnification
The scientists should multiply the magnification of the eyepiece (10x) by the magnification
of the objective lens in use.
d. The scientist should refer to the microscope's manual for the correct magnification.
Answer:
c
Explanation:
eyepiece has it magnification and also objective lens.when both are multiplied the result is magnification
Hurricanes are generally: ___________.
a. Smaller than mid-latitude cyclones
b. Late summer and early fall storms
c. Areas of strong rainfall and winds
d. Larger than tornadoes
e. All of these
Answer:
The answer is option B "Late summer and early fall storms"
Explanation:
less tropical storms form into Hurricanes. A few great ecological conditions should be available to allow Hurricane. To start with, warm sea waters of in any event 80 degrees Fahrenheit should stretch out to a profundity of 150 feet or more. Warm surface temperatures along are insufficient for typhoon development; there must be a plentiful profundity of warm water to give energy to the tempest. Second, the environment should cool quick enough from the surface upward to permit soggy air to keep on being precarious and convect. Layers of warm air over top stop or "cap" tropical improvement. At long last, there should be minimal vertical breeze shear, that is, change in wind speed, between the surface and the highest point of the lower atmosphere. Solid breezes over top forestall tropical Hurricane development.
Scientists have names for more than 30 types of snow crystals.
Answer:
it's false there are only five types of snow crystals
False I looked it up on goggle and it said that only 7 snow crystals are known
Butter is solid at room temperature because *
0 it has gone through a hydrogenation process.
Othey have double bonds in the hydrocarbon tails.
there are fewer hydrogens attached to the carbons.
there are more hydrogens attached to the carbons.
I need help please & show work??
Hydrogen - 3 is a radioisotope with a half life of 12.32 years. How long would it take a 40 g sample to decay down 2.5 g ?
Answer:
Whether or not a given isotope is radioactive is a characteristic of that particular isotope. Some isotopes are stable indefinitely, while others are radioactive and decay through a characteristic form of emission. As time passes, less and less of the radioactive isotope will be present, and the level of radioactivity decreases. An interesting and useful aspect of radioactive decay is half-life, which is the amount of time it takes for one-half of a radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by coTnditions and is independent of the initial amount of that isotope.
Consider the following example. Suppose we have 100.0 g of tritium (a radioactive isotope of hydrogen). It has a half-life of 12.3 y. After 12.3 y, half of the sample will have decayed from hydrogen-3 to helium-3 by emitting a beta particle, so that only 50.0 g of the original tritium remains. After another 12.3 y—making a total of 24.6 y—another half of the remaining tritium will have decayed, leaving 25.0 g of tritium. After another 12.3 y—now a total of 36.9 y—another half of the remaining tritium will have decayed, leaving 12.5 g. This sequence of events is illustrated in Figure 15.1 “Radioactive Decay”.
Explanation:
What explanation provides support for continental drift theory
Answer:
All the continents seem to fit together like a puzzle.
Explanation:
Hope this helps!
Answer:
D
Explanation:
I think sorry if im wrong
respiration in echinoderms
Did the medical assistant have the syringe properly positioned
Answer:
the medical assistant could have positioned the syringe wrongly, as it could have been the one causing pain and irritation, and it was vital to confirmed..........Which of the following predictions is most likely consequence of the mutation?
Answer:
Explanation:
where are the following
Which of the following monomer is used as the main source of energy
glucose is the monomer used as the main source of energy
In this food chain energy moves from one living thing to another. What source of energy starts this food chain?
A)
grass
B)
the Sun
C)
the air
D)
mushroom
Answer:
B. The Sun
Explanation:
This is because almost everything needs sun to live. It is a continuous cycle. If there is no sun for a long period of time, most things will die, or start to wilt if it is a plant like grass.
How many angels can dance on the head of a pin?
1This is a question that has been pondered over the centuries. Can it be answered using scientific method? Is it a scientific question?
The Goal of Science
2The goal of science is to answer questions about the natural world. Scientific questions must be testable. Which of these two questions is a good scientific question and which is not?
What is the age of our planet Earth?
How many angels can dance on the head of a pin?
3The first is a good scientific question that can be answered by radiometrically dating rocks among other techniques. The second cannot be answered using data, so it is not a scientific question. Which of the following would be considered a good scientific question?
SELECT AN ANSWER
A-Why do airplanes fly?
B-How much does a thermometer weigh?
C What is your favorite food?
D) How does size affect the speed of an object rolling down a hill?i
Answer:
D) How does size affect the speed of an object rolling down a hill?
Explanation:
i think
which organ system is responsible for transporting oxygen throughout the organism,
Why do materials move across a membrane?
Answer:
they passively move from an area of high concentration to low concentration and also by active transport
Explanation:
Answer:
Explanation:
Mass has a tendency to spread equally throughout available space. This is called diffusion
How many genders are there?
Answer:
2 only
Explanation:
Answer:
there are 2 genders: the male and female
This stage of cellular respiration requires the presence of oxygen.
A. anaerobic respiration
B. glycolysis
C. fermentation
D. aerobic respiration
Answer:
Aerobic Respiration
Explanation:
Aerobic (in the presence of oxygen)
Anaerobic (absence of oxygen)
Glycolysis (central pathway for glucose{sugar} metabolism)
Fermentation (chemical breakdown of a substance by bacteria, yeast or other microorganisms and the escape of gases and heat)
Cyanide poisons cell by limiting the production of ATP through cellular respiration. Cyanide does this by blocking the enzyme that attaches electrons and hydrogen atoms to oxygen to form water.
Which stage of cellular respiration would this most directly affect?
A Acetyl CoA formation
B Electron transport chain
C Glycolysis
D Krebs cycle
According to the bar graph, how many players averaged more than 30 points
per game?
Answer:
2 players
Explanation:
Answer:
2
Explanation:
= Arenas and Bryant
.........
A mutation in a polypeptide with the original amino acid sequence of: Met-Ala-Gln-Arg-Glu-Leu results in a mutant with the sequence: Met-Ala-Gln-Gly-Glu-Leu. Which describes the most likely type of mutation that has occurred?
Answer:
This question lacks options, however, it can be answered based on general understanding of the topic
The answer is SUBSTITUTION MUTATION
Explanation:
A mutation is any change that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. One type of mutation is SUBSTITUTION MUTATION, which is a mutation in which one or more nucleotide base is replaced by another in the sequence.
Nucleotide bases are read in a group of three called CODON. Each of these codons specify amino acid. Hence, if the nucleotide base sequence is altered during mutation, the amino acid sequence is altered likewise. In this case where the original amino acid sequence is: Met-Ala-Gln-Arg-Glu-Leu, the mutation affected the nucleotide bases coding for Arginine (Arg), hence changing it to Glycine (Gly).
This means that a base substitution mutation occured, replacing the amino acid Arginine with Glycine in the mutated sequence.
The process of cellular respiration occurs in which of the following organisms?
A. Only in plants.
B. Only in animals.
C.I n most living organisms
D. Only in plants and animals
Explain how matter is cycled between plants and animals.
The food of come from autotrophic plant to animal through food chain. The energy cycles between the air and soil and plants, animals, and microbes occur by food web.
What are the components of food web?A food web is defined as the cyclical event of energy transfer among different trophic level of organism.
The major components are primary producers, primary consumers, secondary consumers, tertiary consumers, quaternary consumers
Primary producers are the green autotrophic plants and capture some of the solar energy and convert it into chemical energy by photosynthesis.
The net primary productivity (NPP) of energy is defined as the rate of photosynthesis minus the rate of respiration of plants.
Primary consumers or herbivores feed on producers constitute the second trophic level of the food web.
in third tropic level, Secondary consumers eat primary consumers where as tertiary consumers, quaternary consumers or predators, carnivores or omnivores, which are both plant- and animal-eaters, such as humans.
For more details regarding food web , visit:
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Compare between a simple and compound microscope
Answer:
simple micro scopes or for seeing just small items and compound micro scope is for even smaller stuff!
Explanation:
A compound microscope allows you too see stuff like atoms they are super small and cant be seen by the naked eye so we need a strong tool called the compound microscope!
HELPPPPPP ASAPPPPPPPP HELPPPP
Answer:
it is C. Little to No agintation
PART II
Direction: Write the symbols of some elements and the group number it belong to
Name
Symbol
Group Number
Iron
Silver
Mercury
Oxygen
Gold
Potassium
Xenon
Magnesium
Hydrogen
#pa help po
Answer:
Iron -> Fe - Group 8
Silver -> Ag - Group 11
Mercury -> Hg - Group 12
Oxygen -> O - Group 16
Gold -> Au - Group 11
Potassium -> K - Group 1
Xenon -> Xe - Group 18
Magnesium -> Mg - Group 2
Hydrogen -> H - Group 1
4. How did the pH of the water affect the hatching of the brine shrimp?
I
True or false : the pelvic girdle is larger and wider in make animals versus female animals?
what molecules from proteins when linked together with covalent bonds
Answer:
Amino Acids
Explanation:
they link with each other through means of peptide bonds and as a result form proteins