The atomic number is how many protons are in the nucleus of the atom. The atomic mass is how much mass is in the atom. Example: The atomic number of Helium is 2, and the atomic mass is 4. <span>To calculate the atomic number, simply count the protons.</span> <span>To </span>calculate<span> the </span>atomic mass<span> of an </span>atom,<span> add up the </span>mass<span> of </span>protons<span> and neutrons. Hope this helped! c:</span>
Answer:
Explanation:
20mL = 0.020L
0.115M = mol/0.02L
mol=0.0023
equivalence point → mols of weak acid = mols of strong base
0.1014 = 0.0023/volume
volume = 0.02268 L → 22.68 mL
<span>A mechanical wave is a disturbance in matter that transfers energy through the matter.</span>
Physical changes happen when you do/mix something that can be reversed. Best example is ripping a paper, you can just tape it back together so it is just an observable thing that changes, which is a physical change. Chemical changes happen when you mix things and they make a new substance and can’t be reversed. The best example of this is the Statue of Liberty, which changed in color due to the chemical change between the oxygen and copper, which created a new substance (rust) which made it green instead of copper.
Sorry for the long answer but hope this helps!
A earthquakes because the plates will suddenly shift quickly or gring quickly causing the ground to move because of the tectonic plates.
