Answer:
An acid is a substance that donates hydrogen ions. Now there are more hydrogen ions than hydroxide ins in the solution. This kind of solution is acidc. A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions moves the other way.
Explanation:
Answer:
An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used to determine pH.
Explanation:
An acid is a substance that donates protons or accepts a pair of valence electrons to form a bond.
A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.
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Answer:
Position 4
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Organize the following groups of elements in order from least to most electronegative (Chromium, Zinc, Tungsten, lodine ) piz help me
Answer:Zinc 1.65
Chromium 1.66
Tungsten 2.36
Iodine 2.66
Zinc 1.65, Chromium 1.66, Tungsten 2.36 and Iodine 2.66
What is electronegativity?The term "electronegativity" describes how attracted an atom is to the bonding electrons in molecules as opposed to other atoms.
American chemist Linus Pauling developed a set of dimensionless variables known as electronegativity values that vary from a little under one for alkali metals to a maximum of four for fluorine.
Electropositive elements are those that are on the left of the periodic table and have low electronegativities. We shall use the key attribute of the order of electronegativities F > O > N > C to explain the chemical properties of organic molecules.
Therefore, Zinc 1.65, Chromium 1.66, Tungsten 2.36 and Iodine 2.66.
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An animal cell with a 30% salt solution is placed in a beaker with a 20% salt
solution. Which is the correct conclusion if the cell remains in the beaker for an
extended period of time?
Answer:
the animal cell will burst
Explanation:
If the salt solution in the animal cell is 30%, it means the water is at a 70% concentration. Outside is 20%, so the water is 80%.
Water will enter the cell. Water is at a higher concentration outside the cell (80%) or a lower concentration inside the cell (70%) by the process of osmosis.
Eventually, the animal cell will burst, because it does not have any cell wall to control the swelling of the cell that occurs as water flows in.
During cell reproduction, chromatin fibers coil up into structures called
a. chromosomes
b. lysosomes
c. nucleoli
d. ribosomes
During cell reproduction, chromatin fibers coil up into structures called chromosomes. Therefore, the correct option is A.
What are chromosomes?Chromosomes are structures made up of DNA and proteins that are found in the nucleus of the cell. They contain genetic information That are responsible for the inherited characteristics of the organisms such as eye color, hair color, height etc.
Chromosomes play a crucial role in cell division, as they ensure the proper distribution of genetic material to the daughter cells.
During cell division, chromosomes are replicated and then separated into daughter cells, ensuring that each cell receives a complete set of chromosome.
The number and arrangement of a chromosome vary depending on the species, but all human cells except the sperm and egg cell contains 23 pairs of chromosomes. Hence, the correct option is A.
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Water is a polar molecule. c. Water is an ionic compound.
The INDEPENDENT VARIABLE:
A. Is the participant
B. Is what the scientists manipulate in the experiment
C. The component that is measured. D. The results of the experiment
Answer:
B. Is what the scientists manipulate in the experiment.
Explanation:
The Independent variable is not dependent, or doesn't rely, on another variable in the experiment. So, it would make the most sense that they would manipulate the Independent so that they can watch and see how the dependent variable reacts to the manipulation, or the change, in the independent variable.
why is the SI measurement system so important to the scientific community
enter the answer in the space provided
Answer:
without the ability to measure, it would be difficult for scientists to conduct experiment of form theories and also the chemical industry, it is also essential in farming, engineering, construction, manufacturing, commerce and numerous other occupation and activities.
These cells have genetic material that is 50% from one parent and 50% from the other parent. O Eukaryotic Prokaryotic 5 6 7 8
Answer:
and the question is?
Explanation:
pls be specific
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What are the identifying features of carbohydrates
A student wants to compare how long a flashlight will continue to shine using different brands of batteries. How can the student make sure that the test is fair?
Answer:
start with unused fresh out of the pack batteries
Answer:
THE TYPE OF FLASHLIGHT USED
Explanation:
HELPP ASAP AND THANKSS!!
Answer: A and B
Explanation:
PLEASE HELP!!! (ANSWER APPROPRIATELY)
Answer:
With the boost in warmer weather and excess water, populations will boom
Explanation:
Yabbies will do best at a water temperature of between 12°C and 20°C but they will tolerate water that is a little colder or warmer. Complete immersion in water is not essential for life for the yabby. If its gills are kept moist (humid air is sufficient), it can absorb oxygen from the air and survive for many days out of water. To breed, however, it must be in water. With the water needed for breading and warmer weather used for breeding, population numbers for the Yabbies should rise.
Which of the following is an example of how enzymes are catalyst?
A. Enzymes can alter the free energy change (∆G) for a chemical reaction.
B. Enzymes increase the free energy of the reactants to make the reaction go faster.
C. Enzymes provide the activation energy for the reactions they facilitate.
D. Enzymes lower the activation energy so that reactants absorb enough energy to reach transition state.
Answer:
d
Explanation:
is this true or false, Surface waves result from a combination of up-and-down plus side-to-side motion.
Answer:
yaaa you knew that air is everywhere it moves
Which one is odd one out on the basis of respiration:
Amoeba, cockroach, earthworm, euglena
Answer:
Cockroach is you answer.
Explanation:
They do this by using a very efficient breathing system that uses air filled tubes, called trachea, to deliver oxygen directly to cells. Oxygen flows in as required into the tracheal system through valves on the insect, called spiracles. But, sometimes, they shut their spiracles and stop breathing.
The primary source of energy for most organisms are
Answer: The Sun
3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
Explanation:
Answer:
The main energy source for life is the Sun
Explanation:
One function of proteins is to provide structural support.
True or False
Answer:
true....................
Explanation:
:)
Where are you most likely to find ligaments in the body?
A joints between long bones
B joints between two or more irregular bones
C joints between a long bone and a short bone
D joints between muscles and bones
Answer:
( A. joints between long bones )
Answer: joints between long bones
Explanation:
What is deoxyribose?
A. n acid found in DNA
B. a sugar in DNA
C. a pigment found in RNA
D. a nitrogenous base found in DNA and RNA
Where does a carnivore directly get its energy from?
Answer:
From their food, for example when a human eats ... let’s say a burger. It has meat, vegetables and other good things for your body to get it’s vitamin and energy
Explanation:
How do oxbow lakes form? A. It is formed as lakes grow larger due to erosion and begins to look like an ox. B. It is formed when a bend in a river is cut off to form a lake. C. It is formed when a delta grows large enough to cut off a river to form a lake. D. It is formed when a dam stops the flow of a river and creates a lake.
Answer:
Oxbow lake is formed when a bend in a river is cut off to form a lake.
Explanation:
OPTON A - It is formed as lakes grow larger due to erosion and begins to look like an ox.This statement is incorrect , as the shape of the oxbow lake is not like an ox , it is a horse-shoe shaped lake .
OPTION B - It is formed when a bend in a river is cut off to form a lake.This statement is correct , as An oxbow lake is a U-shaped lake that forms to create a free-standing body of water when a large meander of a river is cut off.
OPTION C - It is formed when a delta grows large enough to cut off a river to form a lake.This statement is also wrong, as a river delta is specified by this statement.
OPTION D - It is formed when a dam stops the flow of a river and creates a lake.This statement is also false, since the creation of a reservoir is established by this statement.
FORMATION OF OXBOW LAKE -:The neck of the meander gets narrower and narrower progressively. The curve gradually grows so close that the river slices through the neck of the meander to take a new, straighter path. Sediment locks the end of the old loop over time. This leaves a region of water that is different, called an oxbow lake.
Hence , the correct option is B.
Answer:
Bbbb
Explanation:
PLEASE ANSWER ASAP. Thank you. QUESTION: Explain the evidence that suggests that the universe is expanding.
water evaporates from plants by a process known as
Answer:A través de la fotosintesis
Explanation:
Answer:
Transpiration
Explanation:
2. What do mushrooms, trees, spiders, birds and humans all have
in common?
Answer:
They are all living organisms
Answer:
In basic biology, however, we can state two major facts that the both have in common when compared to other groups of living beings. The first one is our intracellular structure: fungi and humans present eukaryotic cells (such as plants and protozoa), which, unlike bacteria, have a membrane protecting its nuclei.
Explanation:
EXTRA POINTS* the particles in a ______ solid are arranged in a repeating pattern.
A company wants to build a new store. After reviewing the piece of land it is determined that a threatened woodpecker nests in that area .If the company is granted permission to build , what is the most environmentally responsible action by the company
Answer:
Explanation:
If the piece of land is forested or covered with many trees, the company can decide not to bring down all the trees (leaving some trees standing) and move as many as possible nests to the available trees within it's land. This will prevent emigration of the woodpeckers and can ultimately help conserve the woodpeckers in that land and indeed the area in which the land is situated.
This is most environmentally friendly because killing or scaring away of the birds by destroying there homes could lead to imbalance in the environment and even cause gradual extinction of the birds in the environment/area.
Energy in an ecosystem flows directly from
a. producers to tertiary consumers
b. producers to secondary consumers
C. tertiary consumers to secondary consumers
d. secondary consumers to tertiary consumers
energy enters an ecosystem through photosynthesis. By feeding on plants and on one another, animals play an important role in the movement of the matter/energy though. they also influence the quantity of plant and biomass present. so the anwser is D, secondary consumers to tertiary consumers
Answer:
''d' is correct.
Explanation:
Producers-->Primary Consumers-->Secondary Consumers-->Tertiary Consumers
what makes angiosperm more advance than gymnosperm
Answer& Explanation:
Angiosperm is more advanced due to the mechanism of protection it has since developed as opposed to its predecessor, gymnosperm. Angiosperms could be deemed the inventors of animal-mediated pollination or dispersal, whereas gymnosperms mostly depend on wind-mediated pollination (which is far more of a gamble than animal mediated).
1) Angiosperms seeds are enclosed in fruits, which increases the chances of dispersal by either wind, water, or animals. Animals can eat the fruit and disperse the seeds via feces or by brushing the fruit off of their fur coats new areas of the terrain.
2)The development of flowers. Flowers are especially important because depending on the flower it can attract a set species of animals in order for pollination to occur. That species of animal could only focus on those few flowers and would allow the female part of the flower to receive pollen (produced by the male part of the flower) from all over the place. This theory is also applicable to animal mediated fruit dispersal.
Which of the following indicates that an endothermic reaction has occurred?
O Heat is released
O water is formed
O Salt is produced
O Temperature decreases
The following indicates that an endothermic reaction has occurred when temperature decreases, which is in the last option as the endothermic reaction needs heat to carry out the reactions.
What is the significance of the endothermic reaction?There are two types of reactions, such as the reaction that requires heat to form the product, the endothermic reaction, while some of the reactions that release heat are called the exothermic reaction, and the exothermic reactions have more energy at the reactant side than the product side. In the case of a endothermic reaction, the product usually has more energy than the reactants, and the change in free energy here is positive.
Hence, the following indicates that an endothermic reaction has occurred when temperature decreases, which is in the last option as the endothermic reaction needs heat to carry out the reactions.
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pls help me I don't understand this
Answer:
D
Explanation:
the organism belongs to kingdom protoctista it is called amoeba
the characteristics stated in d are those of members of kingdom protoctista.