Answer:
John Dalton described the atoms based on there chemical and physical properties of which some were disproved later.
Explanation:
John Dalton described the atoms as
- Atoms are the smallest indivisible particles of matter.
- Atoms can neither be created nor destroyed.
- All atoms of the same element are identical by mass and size.
- Atoms of the different element have different mass and size.
- Atoms combined to form a compound and they do so in simply whole number ratio.
<h3>Answer:</h3>
Acids hydrolyze or dissolve in solutions to form <u>Protons</u>.
<h3>Explanation:</h3>
Acid are defined according to three different theories and concepts.
i) Arrhenius Concept
ii) Lowry Bronsted Theory
iii) Lewis Theory
According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".
Example:
HCl → H⁺₍aq₎ + Cl⁻₍aq₎
H₂SO₄ → 2 H⁺₍aq₎ + SO₄²⁻₍aq₎
Proton (H⁺):
Hydrogen atom with atomic mass of 1 amu contains one proton and one electron in its first shell. When this single electron is removed from hydrogen atom it is left with only one proton hence, H⁺ is called proton.
Hydrolysis:
In simple, hydrolysis is that reaction in which water molecules are utilized to breakdown a chemical compound.
<h3>Conclusion:</h3>
Hence, we can conclude that Arrhenius Acids when added to water are being hydrolyzed by water molecule and yield H⁺ (proton) along with corresponding negative specie.
Answer:
No limiting reagent. There is an exact amount of each.
Explanation:
Start by getting the equation
Fe + O2 -> Fe2O3
If you balance the oxygens the Fe will easily follow.
Fe + 3O2 => 2Fe2O3
So far what you have is 6 oxygens on the right and 6 on the left. Now all you need do is balance the irons. The are 4 on the right (2Fe2). So you must have 4 on the left.
4Fe + 3O2 -> 2Fe2O3
Now to your question if you have 4 mols of iron, you need 3 mols of O2. Those are the balance numbers of the equation. They also represent mols.
There is no limiting reagent in the theoretical world of chemistry. All the iron will be used up and so will the given amount of oxygen.
There are 54 electrons, 54 protons, and 78 neutrons in an atom of 132 Xe.54.
Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colourless, dense, odourless noble gas found in Earth's atmosphere in trace amounts.
Although generally unreactive, it can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
Solid xenon changes from face-centred cubic (fcc) to hexagonal close packed (hcp) crystal phase under pressure and begins to turn metallic at about 140 GPa, with no noticeable volume change in the hcp phase. It is completely metallic at 155 GPa.
When metallized, xenon appears sky blue because it absorbs red light and transmits other visible frequencies. Such behaviour is unusual for a metal and is explained by the relatively small width of the electron bands in that state.
Full question :
Q. There are ________ electrons,_______ protons, and ______ neutrons in an atom of 132 Xe.54.
a) 78 78 132
b) 54 54 78
c) 54 54 132
d) 78 78 54
e)132 132 54
Learn more about Xenon here : brainly.com/question/124136
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When an object is heated the motion of the particles increases as the particles become more energetic. If it is cooled the motion of the particles decreases as they lose energy.
