30. A5.30 g of Na2CO3 is dissolved in a 400.0 mL solution. What is the molarity for this solution? A. 0.0133 M
B. 0.0500 M
C. 0.125 M
D. 13.3 M

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.