Answer:
The correct answers are "They travel slower than P waves", "They result in much ground motion" and " They are produced by P and S waves".
Explanation:
A surface wave can travel through the existing interface between Earth and air, as well as between Earth and water. A clear example of this type of waves are Love and Rayleigh waves. They travel slower than primary waves, produce large movements in the ground and are produced by primary and secondary waves.
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Explanation :
Barfoed's test : Monosaccharides and reducing disaccharides can be distinguish by this test. The test solution is prepared by dissolving copper (II) acetate in acetic acid.
The equation for the oxidation of glucose by CuO is:
(1)
(2)
Here, CuO act as a catalyst.
In this reaction, first CuO salt get oxidized to form and then get reduced to back (CuO).
Hence, the equations are written above.
Answer:
Molecular oxygen and Hydrogen fluoride.
Explanation:
Definition:
Hydrogen bonding:
It is a type of dipole-dipole attraction between the hydrogen atom and more electronegative atoms.
In hydrogen bonding mostly the highly electronegative atoms are fluorine, nitrogen and oxygen.
Explanation:
In given compound such as methane CH₄ the electronegativity of carbon is 2.55 while that of hydrogen is 2.2 so there is smaller electronegativity difference that's why it can not form hydrogen bond.
In case of molecular oxygen the electronegativite atom oxygen is present. It can form hydrogen bonds with water. its electronegativity is 3.44.
In case of hydrogen fluoride the electronegativity atom fluorine is present. It will form hydrogen bonds with water. Its electronegativity is 3.98. So it is more likely to take part in hydrogen bonding.
Answer:
38.28
Explanation:
4×8.32(p)=33.28 33.28+5=38.28
B. petroleum is a fossil fuel