Answer is: theory.
Theory is a tested,unifying explanation for a set of verified facts.
Theory is a system of explanations that ties together a lot of facts.
Hypothesis is a suggested explanation for an observable phenomenon.
Steps of the scientific method:
1) ask a question about something that is observed.
2) do background research.
3) construct a hypothesis, an attempt to answer questions with an explanation that can be tested.
4) test of hypothesis.
5) analyze collected data and draw a conclusion.
Answer:
Try googling it that will help. If not I don't know?
Explanation:
Answer:
270g
Explanation:
Given parameters:
Concentration of solution = 1.5M
Volume of solution = 4.5L
Unknown:
Mass of NaOH added = ?
Solution:
Concentration is the number of moles of solute found in a solution.
To solve this problem, we need to find the number of moles of NaOH first;
Number of moles = concentration x volume
Number of moles = 1.5 x 4.5 = 6.75moles
Now, to find the mass of NaOH;
Mass of NaOH = number of moles x molar mass
Molar mass of NaOH = 23 + 16 + 1 = 40g
Mass of NaOH = 6.75 x 40 = 270g
<h2>Answer:</h2>
<u>Biomagnifiaction is the accumulation of the toxic chemicals in organisms up to the dangerous level and successively contributed to the food chain.</u>
<h3>Explanation:</h3>
Bio magnification which is also known as bio accumulation or bio amplification.
In bio magnification a compound which is chemical in nature is accumulated due to the eating of food that contains elements.
As in case pf plants, fertilizers and chemicals are sprayed on the plants which are then consumed by the other organisms and become the part off that organism in the elevated form. That organism is then consumed by the other organisms.
And then in this process, the chemical will be transferred to the highest trophic level of food web.
The amount of potassium chloride (KCl) in 27.2 kg of a solution containing 18.7% KCl by mass solution is 5.086 kg.
<h3>How to find the mass of solute ? </h3>
Mass of solute = Mass percent of solute x Mass of the solution
Here,
Mass percent of solute = 18.7 %
Mass of the solution = 27.2 kg
Now put the value in above formula we get
Mass of solute = Mass percent of solute x Mass of the solution
=
=
= 5.086
Thus from the above conclusion we can say that The amount of potassium chloride (KCl) in 27.2 kg of a solution containing 18.7% KCl by mass solution is 5.086 kg.
Learn more about the Mass Percent here: brainly.com/question/26150306
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