'Heavy' hydrogen (the isotope deuterium) , 2/1H is involved ,
[2= mass number, 1= atomic (proton) number]
2/1H + 2/1H → 3/2He + 1/0n
Answer:
The process is called Nitrogen fixation
Explanation:
The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.
the atoms in an oxygen molecule.
Answer:
here hope it helps
Explanation:
covalent bonds
(2) carbonate (4) peroxide
Carbonate ion contains the greatest number of oxygen atoms. So, the correct option is (2).
Polyatomic ion: refers to a charged chemical ion or species made up of two or more covalently joined atoms, or a metal complex that can be considered to behave as a single unit.
Acetate(C2H3O−) has two atoms of oxygen, carbonate has three oxygen atoms, hydroxide
has one, and peroxide (
)has two atoms of oxygen. Thus, carbonate has the highest number of oxygen atoms.
To know more about:-
Answer:
The correct answer is option 2, that is, carbonate.
Explanation:
A molecular ion, also known as a polyatomic ion, refers to a charged chemical ion or species comprising two or more atoms that are combined covalently, or of a complex of a metal, which can be regarded to be functioning as a single unit.
Of the given options, acetate has two atoms of oxygen, carbonate has three oxygen atoms, hydroxide has one, and peroxide has two atoms of oxygen. Thus, carbonate has the highest number of oxygen atoms.
Asking a question
b.
Evaluating a promotional claim
c.
Adjusting a conclusion
d.
Determining a logical conclusion
The step that the student just completed in the situation given above is asking a question.
As the student noticed that consumption of soda deceases their energy level, he asked the question to this why does this happens? this was the first step of using critical thinking skills to ask a question first analyze it and then perform and witness some experimental observations and come out with the conclusion.
But in this given example he just completed the first step of asking question. Therefore, the answer is asking a question which is option A.
The scientific method is carried out in several stages:
1. Observation,
2. Determine the problem
2. Data, collect information
3. Hypothesis
4. Experiments
5. Analysis
6. Conclusion
7. Compilation of laws or theories
In the context of the problem, students will experiment to study the effect of
So students issue a question which is why can affect their energy, Thus students have made the first 2 steps in the scientific method :
1. Observation of and the human's energy level,
2. Determine the problem that will be the basis of student research, namely the influence of the human's energy level.
Indirectly this student has obtained 2 variables to be examined, namely variable and human energy level, which can be changed according to conditions, which are chosen as fixed variables and which ones are independent variables.
So that the next step is collecting data and so on can be done immediately
If we look at other answer choices :
B. Evaluating a promotional claim
This stage is done after the results of the research have been obtained so that students can submit an evaluation of their learning outcomes
C. Adjusting a conclusion
This stage will be obtained after students have completed the analysis of the experimental data
So the most appropriate answer is A.Asking a question
the Scientific Method
scientists use the scientific method
the purpose of the scientific method
Keywords: scientific method, fixed variable, independent variable, asking a question, human energy level