An independent country in which people share a common culture is called an aristocracy.
an ethnic group.
a nation-state.
a polity.

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Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?