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:
Inorganic Phosphorus,phosphate
Hello!
Percentage error = (true value - measured value)/true value x 100%
Percentage error = (27.7-27.0)/27.7 x100% = 25.3%
