Objects float on water because it has surface tension.
1. D. Soil
2. C. Oil and vinegar
3. D. Distillation
4. D compound
5. C. Fe
I don’t know number 74 sorry
6. C. Fermenting of cheese
Answer:
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High School Chemistry 10+5 pts
Water molecules are _____polar_______ because the hydrogen atoms are positively charged on one end and the oxygen atoms are negatively charged on one end. Molecules that are _____nonpolar_______ share electrons equally. Sodium chloride (NaCl) is an example of a ______polar______ molecule because it is soluble in water. Molecules that are _____nonpolar_______ are insoluble in water. It is ______false______ that most molecules formed with nonpolar bonds dissolve easily in water.
Yes, Bobby is correct
Explanation:
Anomalously high boiling point of water is as a result of the intermolecular forces between the molecules of water.
The intermolecular forces found in water are the very strong hydrogen bonds. The bulk of the physical properties of matter are due to the intermolecular forces that they possess.
- Hydrogen bonds are stronger than van der waals forces and they are more effective in binding molecules together into larger units.
- Substances whose molecules join via hydrogen bonds have higher boiling points i.e lower volatility than those with van der waals forces.
- Hydrogen bond is actually an electrostatic attraction between hydrogen atom of none molecule and the electronegative atom(O or N or F) of a neighboring molecule.
Learn more:
Hydrogen bonds brainly.com/question/10602513
#learnwithBrainly
Answer:
Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived. The longest-lived radioisotope is 15O with a half-life of 122.24 seconds, while the shortest-lived isotope is 12O with a half-life of 580(30)×10−24 seconds (the half-life of the unbound 11O is still unknown).
