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belka [17]
3 years ago
11

A -------(fact, hypothesis, theory) is scientific knowledge established through direct observation and remains constant. Scienti

fic knowledge can change when scientists ------( conduct experiment, generate hypothesis, hold different views).
Chemistry
2 answers:
Lerok [7]3 years ago
4 0
<h2>Answer:</h2>

1. The first choice is correct which is<u> fact.</u>

2. The first choice which is <u>conduct experiment</u> is correct.

<h3>Explanation:</h3>

A fact is nonscientific observation based law which can not be changed because any experiment could not be conducted to test it. As the sun sets in the west.

While a scientific theory or observation can be changed because experiment can be conducted on these. As dengue is caused due to a virus.

lutik1710 [3]3 years ago
3 0
I believe that you are needing to pick from the three word choices. I believe the first one would be fact and the second one would be conduct experiment.
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Atoms have been traditionally viewed as being composed of three different types of particles: protons, neutrons, and electrons.
sattari [20]

Answer:

See explanation

Explanation:

Before the advent of the wave-particle duality theory proposed by Louis de Broglie, there was a sharp distinction between mater and waves.

However, Louis de Broglie introduced the idea that mater could display wave-like properties.  Erwin Schrödinger developed this idea into what is now known as the wave mechanical model of the atom.

In this model, electrons are regarded as waves. We can only determine the probability of finding the electron within certain high probability regions within the atom called orbitals.

This idea has been the longest surviving atomic model and has greatly increased our understanding of atoms.

7 0
3 years ago
Consider the balanced equation below.
Karo-lina-s [1.5K]

The correct option is (a) H₂S : SO₂ = 2 : 2 and O₂ : H₂O = 3 : 2

<h3>What is molar Ratio ?</h3>

Molar ratio also known as stoichiometry is the ratio in which the reactants and products are either formed or reacted in the given equation

the balanced equation is as follows ;

2H₂S + 3O₂ --> 2SO₂ + 2H₂O

molar ratio can be determined by the coefficients of the compounds in the balanced reaction.

coefficient is the number in front of the chemical compound

coefficients for the compounds in this reaction are as follows ;

  • H₂S - 2
  • O₂ - 3
  • SO₂ - 2
  • H₂O - 2

therefore, correct option is (a) H₂S:SO₂ = 2:2 and O₂:H₂O = 3:2

Learn more about molar ratio here ;

brainly.com/question/17920577

#SPJ1

4 0
2 years ago
Snow melting is a physical change. True False
S_A_V [24]

Answer:

false

Explanation:

4 0
3 years ago
Read 2 more answers
Please help I need to correct I don't understand it
victus00 [196]
Answer is d. in hetrogeneous you can separate things from each other
4 0
2 years ago
How do the properties of the elements change as you move across a period on a periodic table from left to right?
Tomtit [17]
B) The elements become less reactive.
8 0
3 years ago
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