The solubility of sodium carbonate is 21.5 g per 100 mL of water at 20 °C. How much sodium carbonate is capable of dissolving in 500 mL of water at 20 °C?

Which position represents spring in the southern hemisphere? a) b) c) d)

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it