Answer: Percent composition by element
Element Symbol Mass Percent
Hydrogen H 6.498%
Carbon C 19.357%
Nitrogen N 22.574%
Oxygen O 51.571%
HOPE THIS HELPS
Chemical element of atomic number 22, a hard silver-gray metal of the transition series, used in strong, light, corrosion-resistant alloys.<span>These alloys are mainly </span>used<span> in aircraft, spacecraft and missiles because of their low density and ability to withstand extremes of temperature.</span>
Answer & Explanation:
As an Alka-Seltzer tablet dissolves in water, it liberates carbon dioxide. ... This carbon dioxide gas has mass, but since it is a gas it escapes from the container and diffuses into the atmosphere. The loss of mass from the container is measured directly with the analytical balance.
Answer:
y or z one of those two i think its z but im so sorry if im wrong if not z then try y also I learned this last year.
The main atomic partilces are electrons, protons and neutrons.
Electrons are around the nuclei and have negative charge.
Protons and neutrons are in the nulei of the atoms. Protons are positive and their charge balance the charge of the electrons, so the atom is neutral.
Neutrons have no charge.
So, the answer is:
the charge of electrons is negative, the charge of the protons is positive and the neutrons have no charge.
