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Kitty [74]
3 years ago
7

Scientists test a hypothesis by?

Chemistry
1 answer:
Novay_Z [31]3 years ago
6 0
They test the hypothesis by experimentation.
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Identify the molecules with a dipole moment: (a) SF (b) CF (c) CCCB (d) CHCI (e) H.CO
trapecia [35]

Answer: An atom has either tendency of accepting or losing electron, on the basis of this virtue it is named as

  • Electronegative: An atom has tendency to attract the shared pair of electron towards itself is called electronegative.
  • Electropositive: An atom that has tendency to give the shared pair of electron towards an electronegative atom is called electropositive.

For the existence of dipole within a molecule there must be a difference in electronegativity of the atoms participating in it. All the molecules here have dipole moment because the atoms participating in them have a difference in electronegative.

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3 years ago
How are rare earth elements like neodymiun important to our technological world?
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Which of the following is a product of the photosynthesis reaction?
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A.glucose is a product of the photosynthesis reaction carbon dioxide is a reactant.

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3 years ago
Calculate the molar concentration of the Br⁻ ions in 0.51 M MgBr2(aq), assuming that the dissolved substance dissociates complet
Y_Kistochka [10]
MgBr2(aq) is an ionic compound which will have the releasing of 2 Br⁻ ions ions in water for every molecule of MgBr2 that dissolves.
MgBr2(s) --> Mg+(aq) + 2 Br⁻(aq)
            [Br⁻] = 0.51 mol MgBr2/1L × 2 mol Br⁻ / 1 mol MgBr2 = 1.0 M
The answer to this question is [Br⁻] = 1.0 M
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3 years ago
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