Which is the best explanation of why heat is released when wood burns?

Select one:

A. Burning releases energy stored in chemical bonds.

B. Burning creates energy by increasing particle motion.

C. Burning destroys matter and creates energy from it.

D. Burning causes convection currents which create heat energy.

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!