What must happen before a chemical reaction can begin
- the activation energy must be exceeded
- the activation energy must be reached
-the concentrations of products and reactants must be equal
- the concentration of reactant molecules must be reduced
Answer:
its B
Explanation:
The incident that happen before a chemical reaction can begin the activation energy must be reached. Thus, option B is correct.
What is activation energy?
The extra energy is the minimum amount of extra energy which required by reacting molecule to convert into the product.
Factor at which activation energy depends are as follows:-
1: Activation energy depends upon the nature of reactant if reactant is ionic then required activation energy is less and if reactant is covalent then required activation energy is high.
2: Nature of catalyst if catalyst is positive then required activation energy is less and if catalysts is negative then required energy is high.
3: Activation energy doesn't depend on pressure, temperature, volume etc.
Temperature is one the important factor at which any reaction is depend. In any reaction if temperature is increases the rate of reaction is increases and if temperature is decreases the rate of reaction is decreases.
Here, is the Arrhenius Equation which shows the temperature dependence of the rate of a chemical reaction.
k=Ae^−EaRT
Where,
k= rate constant of the reaction
A= Arrhenius Constant
Ea= Activation Energy for the reaction (in Joules mol^-1)
R= Universal Gas Constant
T= Temperature in absolute scale (in kelvins)
Therefore, The incident that happen before a chemical reaction can begin the activation energy must be reached. Thus, option B is correct.
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Which of the following statements correctly supports the conclusion that eukaryotic cells are more complex than prokaryotic cells?
A. only eukaryotic cells contain ribosomes
B. Only eukaryotic cells can be seen using a microscope
C. Only eukaryotic cells contain membrane bound organelles
D. Only eukaryotic cells contain DNA and RNA
Why is earth interior layered??
Answer:
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Explanation:
the study of ecology believed that living and non-living thing do not have any relationship, and living thing is independent of a non-living thing.
true or false
Answer:
true
Explanation:
Need help emt science class
Answer:
What to do during a flood
Explanation:
Which statement describes the major role of lipids within a cell?
A. They cause DNA to replicate
B. They move RNA in the cytoplasm.
C. They catalyze chemical reactions in the cell cytoplasm.
D. They are the main structural components of membranes.
Answer:
I think d
Explanation:
Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules. The three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.
How can you cause a substance to turn from a solid to a liquid or a liquid to a gas?
Answer:
heat
Explanation:
Which of the following is not a process that wears down or build up Earth's surface?
A. erosion
B. deposition
C. compaction
D. Weathering
Answer:
compaction
Explanation:
compaction doesn't wear down or build up the earth's surface
It's the Perfect Weather for a First
Date
(Climate Diagram - Temp = Line Graph, Precip
Bar Graph)
18
36
32
16
28
24
20
14
16
12
12
10
Precipitation (cm)
Temperature (°C)
4
12
-16
-20
24
-28
-32
- 36
0
1 F M A M J J A S O N D
Month
Answer:
gay
Explanation:
oops
Scientists have developed a new herbicide for dandelions that is specifically designed to prevent the conversion of stored energy. Which process does this herbicide affect?
Answer:
Ability to make ATP or the release of oxygen from chloroplasts.
Explanation:
Given that, ATP which is an acronym for Adenosine triphosphate, is where the energy is stored and produced in a plant and at the same time Herbicides affect plants in the area of photosynthesis specifically affecting the release of oxygen from chloroplasts, which in turn prevents the generation of energy required for plant growth.
Hence, in this case, the new herbicides affect the ability to make ATP in plants or the release of oxygen from chloroplasts.
Which type of molecule that can be found in living things lacks carbon atoms? Protein Carbohydrates Fat Water
Answer:
d
Explanation:
Ecosystem services are services that are supplied by humans for the environment.
O a. True
O b. False
Give an example of warning coloration used in
nature.
Answer:
Warning coloration (aposematism) is effectively the "opposite" of camouflage and a special case of advertising. Its function is to make the animal, for example, a wasp or a coral snake, highly conspicuous to potential predators, so that it is noticed, remembered, and then avoided.
Hope this helped you.
does water have cell organization
Answer:
Yes
Explanation:
Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry.
1.0X10 to the negative 7th power mg
Answer:
1.0 × 10-7 milligrams
Explanation:
1.0 × 10-7 milligrams
What is one function of proteins?
Answer:
. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.
Explanation:
a group of independent organism in a perticular environment
Answer:
Hmm.
Explanation:
A group of independent organisms in a particular environment are called a community.
A biology student wants to conduct a study of how the amount of food affects weight gain for mice. He sets up four cages with a mouse in each cage. What are the independent variable, dependent variable, and constants? For the independent variable, what would you put in the box below for each mouse?
Answer:
dependent variable is the weight (gain) - weight depends on the food being eaten. The dependent variable "depends" on the independent variable, hence....
independent variable is amount of food
the constant is the type of food.
Explanation:
. Distinguish between gross primary productivity and net primary productivity. Explain how net primary productivity affects the number of consumers in an ecosystem and on the earth. List two of the most productive ecosystems or aquatic life zones and two of the least productive ecosystems or aquatic life zones. Use the concept of net primary productivity to explain why harvesting plants from estuaries, clearing tropical forests to grow crops, and harvesting the primary producers in oceans to feed the human population are not good ideas.
Answer and Explanation:
The gross primary productivity corresponds to the sum of all the energy produced by the plants (primary producers) during the photosynthesis process. The net primary productivity, corresponds to the gross primary productivity value, even the energy value used by the plants in the metabolic processes that they present, in this way, we can conclude that the net primary productivity is the energy that is available for the living beings that consume the vegetias.
The ecosystems with the highest level of productivity are those that have a large number of vegetables with full access to the sun, in this case, we can mention forests and ecological parks. On the other hand, ecosystems with lower levels of productivity are those with a low number of plants, such as cities and areas with deforestation.
Because of our need to consume energy from net primary productivity, we are constantly harvesting vegetables and some photosynthetic water products to use in our food. However, this causes us to remove vegetables from nature and decrease the amount of gross primary productivity that ecosystems would have, and, consequently, decreasing the amount of net primary productivity that we need so much.
All organelles float around in the _________________.
Answer:
The answer is cytoplasm.
cytoplasm
Explanation:
because its in the cell and its the main part of everything floating
The alignment causes a solar eclipse.
Answer:
Whats the question?
Explanation:
Answer:
the moon moves just far enough to cast a shadow to cause an eclipse.
Which of the following is not a characteristic of an industrial society? a. Moves from place to place following resources b. Uses new sources of energy c. Increases pollution d. Uses complex tools and systems
Answer: Option A.
Moves from one place to another following resources.
Explanation:
Industrial society does not move from one place to another because it is a society that involves the use of technology in the production of foods and services to support large population and use of high labour.
An industrial society does not move from one place to another rather they are situated within a geographical location and uses new sources of energy, complex tools and systems and increases pollution which is due to Advent of technology .
Answer:
a. Moves from place to place following resources
Explanation:
What does an atom consist of?
Answer:
Atom consist of subatomic particles.
Explanation:
Which are electron, proton and neutron.
Geology question, halp me plez
Answer:
D. The question is too broad
Explanation:
Logically this question can be observed and answered with our modern tech so that votes out a and b. And noticing it asks about quantity rather than human quality c would be out too. This leaves D. The question is broad, what alligators? define live? You answer should be D
All proteins have amino acids as their building blocks. Even though there are only 20 amino acids, there are more than a million different proteins, and each works in a unique way. Which of the following conclusions about a protein's function is best supported by this information? (4 points)
Group of answer choices
The amino acids combine in different ways to form proteins with different shapes, and this affects which molecules can bind to it, which in turn directs the protein's function.
The amino acids reproduce in different ways, and this allows them to form many different proteins, which in turn directs the protein's function.
The shape of a protein determines what amino acids it is made of and what types of reactions it can be used for, which in turn affects the protein's function.
The shape of a protein dictates when a protein will break apart into amino acids, which in turn affects the protein's function.
Answer:
The amino acids combine in different ways to form proteins with different shapes, and this affects which molecules can bind to it, which in turn directs the protein's function.
Explanation:
There are many different combinations for amino acids to bind, and all of the different combinations have very different structures.
Additionally, the unique shapes of all proteins determine the exact function that they have.
These different shapes will also affect what molecules can bind to it.
Part A: Predict the phenotype that will be expressed by a chicken that is heterozygous (IBIW) for feather color. Part B: Suppose a solid white hen (IWIW) mates with a solid black rooster (IBIB). Predict the percentage of their offspring that will express a co-dominant phenotype. In your answer, be sure to explain the reasoning behind your prediction. Part C: Describe how co-dominance is different from incomplete dominance. Type your responses to parts A, B, and C in the box below.
Answer:
4#458/56+485
Explanation:
so much love ...
Which feature of nuclear fission reactions allows these reactions to take place in a chain reaction?
Thermal energy is released and heats up the reactants.
More smaller atoms form that can undergo fission.
A larger atom is formed, which can then be split.
Neutrons start the reaction and are released during it.
Answer:
Neutrons start the reaction and are released during it
Explanation:
N
Neutrons start the reaction and are released during it is the correct answer.
What is responsible for chain reaction?Neutrons start the reaction and are released during it is the feature of nuclear fission reactions that allows these reactions to take place in a chain reaction because the neutron that is released hit the other atom which leads to the start of other reaction and so on.
so we can conclude that Neutrons start the reaction and are released during it is the correct answer.
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What advantage did sharks have over its rivals that didn't survive the
Devonian extinction?
Need help ASAP! 20 points! I will give BRAINLIEST!
Explanation:
2.004 * 1^11 is not in scientific notation as there is no power of 10 written. We note that 2.004 * 1^11 equals 2.004, which can be written as 2.004 * 10^0.
Create a food chain that is 4 trophic levels using our desert ecosystem. The food chain