Answer:
4th Option
Explanation:
HNO3 is an acid, KOH is a base and they react to produce KNO3 which is a salt and H2O water.
So this reaction is a neutralisation reaction.
Answer 1: The electron is a subatomic particle that has a negative charge. Electron cannot be sub-divided further. An electron has a mass that ia ~ 1/1836 that of the proton.
The positron is also refereed as an antielectron. The positron has the charge of +1e, a spin of 1⁄2. The similarity between positron and electron is that they have same mass.
Answer 2: <span>Positron decay occurs in nuclei having heavy mass. Positron emission decreases proton number relative to the neutron number. Positron also exhibits nuclear transmutation thereby producing an atom of a different element, as compared to parent element,. Them atomic number of daughter element is less as compared to parent element by 1.
Example: </span><span><span>23 12</span>Mg </span><span>→ </span><span><span>23 11</span>Na </span><span> + </span><span>e+ </span><span>+ energy
</span><span>
Answer 3: </span><span>Electron capture is also referred as </span>K-electron capture. It <span>involves absorption of energy, thereby resulting in loss of electron usually from K or L shell. In this process,following thing occurs simultaneously
i) a nuclear proton present in nuclei changes to a neutron, after reacting with an electron which falls into the nucleus from one of its orbitals (preferentially from K or L)
2) Emission of an electron neutrino.
Following is an example of K-electron capture.
7 4Be + 0 -1e </span>→ 7 3Li + energy
Answer 4: Following are the distinct features of <span>transmutations caused by positron emissions and electron capture.
i) Positron: </span><span>A proton get converted into neutron due to radio-active process. This process results in the emission of positron and neutrino. The<span> process results in decrease in atomic number by one unit, and however atomic mass number remains unchanged.
ii) Electron capture: </span></span><span>A electron from the low energy level (K-shell or L-shell) falls into the nucleus. Due to this proton is converted into neutron. During this process, neutrino is emitted from the nucleus. As seen in positron emission, t<span>he atomic number goes down by one unit, but atomic mass number remains unchanged.</span></span>
Hello! Glad to help.
From what I have learned in my ICP class, molecules combine together to form componds. A compound is any molecule that is made up of two or more different elemental atoms.
Hope this helps you! Anymore questions? Just ask.
Answer:
1.44L
Explanation:
P1V1/T1=P2V2/T2
since the temperature didn’t change, stay at 20celsius, we can ignore T1 and T2.T1=T2
(1.00atm)(3.60L)=(2.50 atm)V2
V2=(1.00atm)(3.60L)/(2.50atm)
=1.44L
Answer:
A. Fault blocks
Explanation:
The block mountains are formed by pieces of the crust that breaks down and pieces are pushed up by the movement of the crust around them. These type of mountains usually have a steep and a slope side, due to the irregular nature of the fracture. Example of such mountains are the Sierra Nevada mountains in North-America.
<u>They're not caused by the collision of two tectonic plates</u>, like most of the mountains of our planet.
