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Andru [333]
1 year ago
11

100 POINTS HELP WILL GIVE BRAINLIEST

Chemistry
1 answer:
vodomira [7]1 year ago
6 0

b. testing the hypothesis

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2.What is the scientific method and how does it work?
never [62]

Answer:A hypothesis is a conjecture, based on knowledge obtained while seeking answers to the question

Explanation:

he process of the scientific method involves making conjectures (hypotheses), deriving predictions from them as logical consequences, and then carrying out experiments or empirical observations based on those predictions.

6 0
3 years ago
How many bromine atoms are present in 37.5 g of CH2Br2?
ella [17]
<span>37.8 g CH2Br2 X (1 mol CH2Br2 / 173.83 g) = 4.60X10^-3 mol CH2Br2

4.60X10^-3 mol CH2Br2 X (2 mol Br / 1 mol CH2Br2) X 6.02X10^23 atoms/mol = 5.54X10^21 bromine atoms</span>
5 0
3 years ago
2H+ H- H+ n + energy
lbvjy [14]

from an external source of power

Explanation:

The energy needed for nuclear fusion comes from an external source of power.

Nuclear fusion is the combination of small sized atomic nuclei to form larger ones.

The reaction releases a huge amount of energy but also requires a large activation energy to start up.

  • The energy input require to drive two nuclei into fusion comes from an external source.
  • Nuclear fusion has a high activation energy which serves as the energy barrier for this reaction to take place.
  • The energy comes from the surrounding and once initiated, spontaneous chain reactions are set up.

learn more:

Nuclear reactions brainly.com/question/10094982

#learnwithBrainly

5 0
3 years ago
Which of the elements must be available in water for the metamorphosis of tadpoles?
Grace [21]
The element iodine (I) is important for the fast and hastened metamorphosis of frog-tadpoles. As amphibians, the tadpoles can live in water and land but when they are born they are iodine-deficient. Tadpoles that do not receive ample amount of iodine become tadpoles until the end of their days. 

8 0
3 years ago
Using the example of an ambulance, explain the Doppler Effect. Infer why the doppler effect can or cannot occur in all waves. PL
kozerog [31]

Answer:

When the ambulance is coming towardss you the waves are smushed together and sound higher pitched but then it passes you and when tracveling away the waves are scretched out so the whee whoo sounds lower and that is because of the doppler effect

6 0
3 years ago
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