Answer is: The sum of the masses of protons and neutrons is 20.1797.
This element (neon) has atomic number (Z) 10, which means it has 10 protons and 10 electrons.
Atomic number (Z) is the number of protons, which is characteristic of a chemical element.
Atomic mass (A) is 20.1797.
Ar is relative atomic mass (the ratio of the average mass of atoms of a chemical element to one unified atomic mass unit) of an element .
Hello!
The reaction between HBr and KOH is the following:
HBr+KOH
→H₂O + KBr
To calculate the amount of HBr left after addition of KOH, you'll use the following equations:
![HBr_f=HBr_i-KOH=([HBr]*vHBr)-([KOH]*vKOH) \\ \\ HBr_f=(0,25M*0,64L)-(0,5M*0,32L)=0 mol HBr](https://tex.z-dn.net/?f=HBr_f%3DHBr_i-KOH%3D%28%5BHBr%5D%2AvHBr%29-%28%5BKOH%5D%2AvKOH%29%20%5C%5C%20%20%5C%5C%20HBr_f%3D%280%2C25M%2A0%2C64L%29-%280%2C5M%2A0%2C32L%29%3D0%20mol%20HBr)
That means that after the addition of 32 mL of KOH, there is no HBr left in the solution and the pH should be
neutral, close to 7.
Have a nice day!
Answer:

Explanation:
Hello,
In this case, since 454 g are equivalent to 1 pound and 1000 millilitres are equivalent to 1 liter, the required density is computed below by applying the corresponding conversion factor:

Regards.
Hey there!
<span>Energy that flows from an object with a higher temperature to an object with a lower temperature is
Answer: Heat energy
Hope this helps
Have a great day (:
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