Explanation:
When an object undergoes a physical change (solid to liquid, decrease in temperature etc.), the mass of the object remains constant.
When water freezes, the water molecules vibrate closer to one another and there is less space between the molecules.
The same number of water molecules now occupy a smaller volume, therefore their density increases.
The correct answer is the 3rd option.
Answer:
I'll do #1
Explanation:
Solids:They are molecules packed together and contain the least amount of kinetic energy
Liquids:Flows frequently in space, of constant volume
Gasses:Gas is made up of atoms,mostly made up of a mixture of air
Plasma:Largest part of your blood
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Answer:
A protein is more stable in its native form, because apart of weak interactions between R groups, it also presents other stronger interactions, as those including covalent bonds
Explanation:
For example, covalent bonds between sulfur atoms when disulfide bridges are built. These links are very difficult to break and maintains the protein shape. Disulfide bonds are a few but they use to incide in the structure of native proteins
Answer:
The molecular equation shows each of the substances in the reaction as compounds with physical states written next to the chemical formulas. The
complete ionic equation shows each of the aqueous compounds as separate ions. Insoluble substances are not separated and these have the symbol (s) written
next to them. Water is also not separated and it has a (l) written next to it. Notice that there are ions that are present on both sides of the reaction arrow –>
that is, they do not react. These ions are known as spectator ions and they are eliminated from complete ionic equation by crossing them out. The remaining
equation is known as the net ionic equation. For example: The reaction of potassium chloride and lead II nitrate
Molecular Equation: 2KCl (aq) + Pb(NO3)2 (aq) -> 2KNO3 (aq) + PbCl2 (s)
Complete Ionic Equation: 2K+ (aq) + 2Cl-
(aq) + Pb2+ (aq) + 2NO3–
(aq) -> 2K+
(aq) + 2NO3
–
(aq) + PbCl2 (s)
Net Ionic Equation: 2Cl-
(aq) + Pb2+ (aq) -> PbCl2 (s)
Explanation:
<h2><u>Hope it help yoou mark as Brainlist</u></h2>
C) Fe
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² <u>3d⁶</u>
