Answer:
urea(contains nitrogen),sodium nitrate,Ammonium Sulphate ,Muriate of Potash.
Explanation:
This is the equation for the thermite reaction:
Fe2O3 + 2Al = Al2O3 + 2Fe
You know the charge on the Al and O ions because you know how many electrons each atoms "wants" to give or take by looking at their position on the periodic table (and because it was listed on the cards). Fe is element 26, iron, in the middle of the periodic table. Since it forms Fe2
2
O3
3
, what charge does the Fe ion have?
The charge of Fe in Fe₂O₃ is +3.
Let's consider the equation for the thermite reaction:
Fe₂O₃ + 2 Al ⇒ Al₂O₃ + 2 Fe
One of the reactants is ferric oxide, we can calculate the charge of Fe in Fe₂O₃ considering that:
The sum of the charges of the atoms is equal to the charge of the compound.The charge of a neutral compound is 0.The charge of O in oxides is -2.The charge of Fe in Fe₂O₃ is:
[tex]2Fe+3O = 0\\2Fe+3(-2)= 0\\Fe=+3[/tex]
The charge of Fe in Fe₂O₃ is +3.
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Help me pls I will give brainliest to the correct answerer. Do as much as you can pls
Answer:
Answer below! : )
Explanation:
Explain 1) The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable. The dependent variable is the variable being tested and measured in an experiment, and is dependent on the independent variable. 2) Testing only one variable at a time lets you analyze the results of your experiment to see how much a single change affected the result. If you're testing two variables at a time, you won't be able to tell which variable was responsible for the result. 3) The control group and experimental group are compared against each other in an experiment. The only difference between the two groups is that the independent variable is changed in the experimental group. The independent variable is "controlled" or held constant in the control group 4) Not sure about this one sorry! 5) hypothesizing, observing, and experimenting. 6) This rule says that where you have one situation that leads to an effect, and another which does not, and the only difference is the presence of a single factor in the first situation, we can infer this factor as the cause of the effect. 7) No matter how carefully observations and experiments are performed, it cannot be ensured that every possible factor is the same in every observation. 8) Munsell Charts are used to provide standard descriptions and names of color. 9) Nitrogen, phosphorus, and potassium. 10) Water table, also called groundwater table, is the upper level of an underground surface in which the soil or rocks are permanently saturated with water. 11) Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients. 12) Texture refers to the size of the particles that make up the soil. The terms sand, silt, and clay refer to the relative sizes of the soil particles. The combined portions of sand, silt, and clay in a soil determine its textural classification. 13) The main difference between sand silt and clay is their particle size. Sand particles are larger in size while clay particles are extremely fine, and silt particles are somewhere in between sand and clay particles. Sand, silt, and clay are the main mineral particles in the soil that affect its texture 14) Mineral matter is derived from the constituents of the parent material. Organic matter. The nature and abundance of iron. Moisture content. 15) In some mineral soils aluminum can be dissolved at pH levels below 5.0 becoming toxic to plant growth. Soil pH may also affect the availability of plant nutrients. Nutrients are most available to plants in the optimum 5.5 to 7.0 range. 16) Phosphorus is essential for cell division and growth and promotes plant maturation. 17) Aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so well-aerated soil is important for growing crops. 18) The ground above the water table may be wet to a certain degree, but it does not stay saturated. The dirt and rock in this unsaturated zone contain air and some water and support the vegetation on the Earth.
I did most of them! I didn't do the "Identify". I hope this helps! : )
Sorry if I wrote a lot!!
Give me info about plants and animals that live in coral reefs
Please explain in 3-4 sentences.
Thank you
Answer:
small plants ad animals tend to habit coral reefs because the sharp coral protects the animals from sharks and other predators. It also works as a ecosystem because every animal works together to provide for each other. I can t your anymore but that is the main idea of what coral does. if you can see if you can reword it into more sentences. How this helps!
What is the endosymbiotic hypothesis?
Answer:According to the Endosymbiotic Theory, the mitochondria and chloroplast in eukaryotic cells were originally aerobic bacteria (prokaryotes) that were consumed by a huge anaerobic bacterium (prokaryote).
which of the following statements is NOT part of the cell therory
Answer:
it is accepted that cells contain DNA in chromosomes and RNA in the nucleus and cytoplasm, but only in the modern cell theory. the classical cell theory does not include this. but using either classical or modern theory, it is false that all cells have DNA surrounded by a nucleus.
Explanation:
Hope this helps.
1. Migration that can bring new allcles into a population.
A. natural selection
B. mutation
C. genetic drift
D. gene flow
E. sexual selection
2. Chance and random events that can reduce the variation in small population.
A. natural selection
B. mutation
C. genetic drift
D. gene flow
E. sexual selection
3. Individuals with inherited characteristics that allow them to best compete for limited resources will survive and have more offspring than those individuals with variations that are less able to compete. Because characteristics are inherited, these traits will be better represented in the next generation.
A. natural selection
B. mutation
C. genetic drift
D. gene flow
E. sexual selection
4. Leads to traits that may not be well suited to the environment but increase fitness.
A. natural selection
B. mutation
C. genetic drift
D. gene flow
E. sexual selection
5. Ultimate source of brand new alleles in a population.
A. natural selection
B. mutation
C. genetic drift
D. gene flow
E. sexual selection
Answer:
1. D (In population genetics, gene flow is the transfer of genetic material from one population to another.)
2. C (Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It can also cause initially rare alleles to become much more frequent and even fixed. When there are few copies of an allele, the effect of genetic drift is larger, and when there are many copies the effect is smaller.).
3. A and also E (Individuals with inherited characteristics that allow them to best compete for limited resources will survive and have more offspring than those individuals with variations that are less able to compete. Because characteristics are inherited, these traits will be better represented in the next generation.)
4. D (Gene flow can increase fitness but if it happens in another environment, it decreases the adaptability. If alleles are advantageous, the offsprings' inheritance increases.
5. B (Mutations are the main source of alleles)
What is ocean sequestration?
Answer:
it is the process by which carbon dioxide is removed from the atmosphere, is achieved through various chemical and biological processes
Theo mô hình Operon Lac, vì sao protein ức chế mất tác dụng
Which description best represents the organelle; Nucleus
It’s sad when you realize you aren’t as important to someone as you thought you were.
how are active faults and inactive faults similar
Answer:
Active faults are structure along which we expect displacement to occur. By definition, since a shallow earthquake is a process that produces displacement across a fault, all shallow earthquakes occur on active faults. Inactive faults are structures that we can identify, but which do no have earthquakes.
Explanation:
а
What behavior does a fly
body
to escape
use
from
predators
Answer:
Quick getaway is the answer but I'm not too sure
Write the number of each atom in the chemical formulas for all of the possible combinations of positive and negative ions found on the cards. You can use the cards to figure out the formula by making as many copies of the cards as necessary to get them to line up exactly equally.
Example:
Na__Cl___
The chemical formula is NaCl, so you would place a 1 in the box for both Na and Cl.
A chemical formula is obtained from the number of atoms in a compound.
Chemical compounds are composed of atoms. The number atoms of each element in a compound determines the correct formula of the compound. Before I can write the chemical formula of any compound, I must first determine the number of each atom in the compound.
For instance, phosphorus trichloride contains one atom of phosphorus and three atoms of chlorine hence I would place a 1 in the box for P and 3 in the box for Cl.
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The sweetness of the cookies changes in every run of the experiment. What type of variable is the change in sweetness?
Answer:
It's an independent variable
Explanation:
Because The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable.
Which type of isolation is being described: Yellow butterflies breed during the summer season while red butterflies breed during the winter season, because of this, they cannot interbreed
temporal isolation
geographic isolation
behavioral isolation
By stating that "Yellow butterflies breed during the summer season while red butterflies breed during the winter season" we are referencing a form of temporal isolation.
Temporal isolation is one of the limiting factors for sexual reproduction between closely related species. Temporal isolation refers to the situation in which two closely related species cannot interact sexually with one another due to the timing of their respective mating events.
The question states that the yellow butterflies will breed during the summer season, whilst the red butterflies breed during the winter. Normally, species like this are closely related enough to allow interspecies breeding to take place and create a new species or simply diversify the existing ones. However, due to the distinct timing of the breeding cycles for each butterfly, they will not be able to breed with one another, which is a prime example of temporal isolation.
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HELP NEED ANSWER IN AT LEAST 5 MINUTES will mark brainliest A single cell can be an organism. O True O False
Answer: Yes
Explanation: All organism need energy to survive and carry out basic life functions. Mitochondria in these cells utilize ATP (which are energy molecules) to perform these functions. Even one cell can do this. ... These are all types of cell division that help categorize single-celled organisms as living organisms.
Which of the following is a correct difference between RNA and DNA?
1. RNA is single stranded and DNA is double stranded
2. RNA is double stranded and DNA is single stranded
3. DNA uses Uracil and RNA uses Thymine
4. RNA has deoxyribose and DNA has ribose
Answer:
Chupapi munyano
Explanation:
Answer:
The answer is A. RNA is single stranded and DNA is double stranded
Hope this helps!!
Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blood cells and blood vessels belong to? A. circulatory system B. nervous system C. respiratory system D. skeletal system
Answer:
A. Circulatory system
Explanation:
Circulatory system consist of heart,blood cells&blood vessels
5514998054 ps:- 123456
What is the process by which food is broken down to release energy?
Answer:
Respiration
Respiration:- It is the process by which food (glucose) is broken down in the cells of the body with the help of oxygen to release energy. Since respiration takes place in the cells of the body, it is called cellular respiration.
Explanation:
have a beautiful day ahead
Answer:
Explanation:
Answer is : respiration
What is fulgurite? ? ?????????????
Answer:
Fulgurites, commonly known as "fossilized lightning", are natural tubes, clumps, or masses of sintered, vitrified, and/or fused soil, sand, rock, organic debris and other sediments that sometimes form when lightning discharges into ground.
What are the possible genotypes and phenotypes of the offspring: both parents have achondroplasia (they are heterozygous) and are carriers for diastrophic dysplasia? In what ratios of the phenotypes?
Answer: njnjnjnjinjinjnjinjinjnjnjnjnjnj
Vitamins are created during:
A. Photosynthesis
B. Peroxidation
C. Combustion
D. All the above
Describe the cycling of carbon in the carbon cycle as it passes through the living and non-living components of the ecosystem.
Answer: Photosynthesis, Decomposition, Respiration and Combustion
Explanation:
The cycling of carbon in the carbon cycle is released from animals and plants in form of carbon dioxide through respiration or released by decomposition and internalized by a process called photosynthesis in plants.
The carbon cycleIt initiates when a plant dies and gets buried turning into fossil fuel. This fossil fuel is burnt by humans converting most of the carbon into carbon dioxide.
Carbon dioxide is added to the atmosphere by respiration of animals and the plants. Plants again use this carbon dioxide to perform photosynthesis thus quickly adding it to their bodies from where the cycle continues.
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which organelle do you think is the most important ? make a scientific argument by explaining what makes the organelle you chose more important than all the other organelles
Answer:
The nucleus
Explanation:
This organelle gives all the info. Without it, the cell will die. It's like a human is alive without a brain.
One of the roles of ecological succession is to encourage biodiversity in a habitat. Ecological succession occurs in stages and permits a habitat to allow new species to grow in number as the habitat A)is destroyed B)remains the same C)undergoes change D)is relocated
Ecological succession occurs in stages and permits a habitat to allow new species to grow in number as the habitat undergoes change. Thus C is the correct option.
What is ecological succession?Ecological succession is defined as the process through which the mix of species and habitat in an area changes over time. Gradually these communities replace one another until a climax community like a mature forest is reached, or until a disturbance, like a fire, occurs.
There are two major types of ecological succession namely primary succession and secondary succession. Primary succession occurs when a new patch of land is formed or exposed for the first time.
Secondary succession occurs when a climax community or intermediate community is impacted by a disturbance.
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List ten structure you coul find in an electron micro graphy of an animal cell would be absent from the cell of bacteria
Answer:
Bacteria (prokaryotic) do. not have membranes bound organelles.
therefore it doesn't have nucleus (hasa nuclied instead).no mitrochondira. no gogli appraratus,no
endoplasmic reticulum.
Explanation:
up is the explanation.
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Type of molecule ,been having a hard time figuring it out
Answer: Cyclic adenosine monophosphate
Explanation:
What is hypothesis in paramecium homeostasis
Answer: osmosis
Explanation: water moves into the organism by osmosis and pumped out by the contractile vacuole . the concentration of solutes in the water will determine the rate of contractions in paramecium
Why do you think leewenhoek was excited about what he saw
Answer:
what kind of quastion is this
Explanation: