Answer:
ions; when atom lose or gain electron
Explanation:
when an atom lose electron it becomes positive ion (cation) when an atom gain electron it becomes negative ion(anion)
isotope has same number of atomic number (proton) but different neutron number which affects mass number
According to the Bronsted-Lowry definitions, an acid is any substance that donates hydrogen ions; whereas, a base is any substance that accepts hydrogen ions.
In the first reaction, water is acting as an acid because it donates a hydrogen ions.
In the second reaction, water is acting as a base because it accepts a hydrogen ion.
In the third reaction, water is again donating a hydrogen ion so it is the acid.
In the fourth reaction, water is acting as a base by accepting the hydrogen ion from the ammonium ion.
<u>Step 1- Find each element's molar mass:</u>
K=39.1, Cr=52, O=16
<span><u>Step 2-Multiply by their subscripts:</u>
</span> K=39.1*2=78.2
Cr=52*1=52
O=16*4=64
<span><u>Step 3-Find the molecule's molar mass:</u>
</span> 78.2+52+64= 194.2
<u>Step 4- Divide each element's mass by the </u><span><span><u>molecule's:</u>
</span> K: </span>78.2/194.2= 40.3%
Cr: 52/194.2=26.8%
O: 64/194.2=32.9%
<em>(if this helped, can I get Brainliest? Competing against a friend. Thanks!)</em>
As the speed increases, so does the wavelength while the frequency remains constant.
Forces cause motion. To move something, you need to apply a push or a pull, which is, by definition, a force. Without a force, the object will be immobile, or keep moving without speeding up.