Answer: Number of Hydrogen Bond Acceptor atoms =
2 Number of Hydrogen Bond Donor atoms =
1Explanation: Hydrogen bond interactions are formed between those molecules which contains partial positive hydrogen atoms bonded covalently to most electronegative atoms like
Oxygen,
Nitrogen and
Fluorine.
When hydrogen is attached to Oxygen, Nitrogen or Fluorine its
electron density decreases and gets partial positive charge, this partial positive charged hydrogen atom then makes hydrogen bonding with the most electronegative element (partial negative) of neighbor molecule.
In
Acetic acid there are two oxygen atoms hence there are two most electronegative elements therefore, two Hydrogen Bond Acceptor atom and each oxygen atom can accept two hydrogen bonds.
Also, it contains only one Hydrogen atom attached to oxygen atom so it has one Hydrogen Bond Donor atom.
Answer: At very low temperatures, gases expand less for a given pressure change than they do at high temperatures.
Explanation:
Name:<span> Polonium </span>
Symbol:<span> Po </span>
Atomic Number:<span> 84 </span>
Atomic Mass:<span> (209.0) amu </span>
Melting Point:<span> 254.0 °C (527.15 K, 489.2 °F) </span>
Boiling Point:<span> 962.0 °C (1235.15 K, 1763.6 °F) </span>
Number of Protons/Electrons:<span> 84 </span>
Number of Neutrons:<span> 125 </span>
Classification: Metalloid
Crystal Structure:<span> Monoclinic </span>
Density @ 293 K:<span> 9.4 g/cm</span>3
Color:<span> Unknown</span>
Atomic Structure<span> <span>
Number of Energy Levels: 6<span>
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 32
Fifth Energy Level: 18
Sixth Energy Level: 6
does it help?</span></span></span>
I think it is C. i took a quiz on that.
Answer:
Living organisms need water to survive. Many scientists even believe that if any extra-terrestrial exists, water must be present in their environments. All oxygen-dependent organisms need water to aid in the respiration process. Some organisms, such as fish, can only breathe in water. Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.
Explanation: