When using filter paper chromatography to separate ink, one will observe that more colours are mixed into darker inks. The darker an ink is, the more the colours that will be separated out during chromatography process. Thus, the observation that the darker the ink, the more colours are mixed into it will lead one to believe that ink is a mixture.
Answer:
if you add a neutron to lithium-7 it becomes a compound nucleus of lithium-8
Answer:
D
Explanation:
The scientist identifies the need to make a drug to cure the respiratory illnesses.
Answer:
Carbon-12: with 6 protons and 6 neutrons and an atomic mass of 12.
Explanation:
The compound that was formed by the reaction of the first oxygen released by Cyanobacteria and iron are the metals of the earths crust. Cyanobacteria was the first organisms that used water instead of hydrogen sulfide or other compounds as a source of electrons and hydrogen for fixing carbon dioxide. Early Cyanobacteria inhabited marine sediments where Archean banded iron formations were deposited; consisting of reddish layers rich in iron oxide.
