Balance these scientific equations:

MgO + HB - > MgBr2 + H2O

N2 + O2 - > N2O5

C2H4 + O2 - > CO2 + H2O

Fe + HCI - > FeCl2 + H2

If an ice cube melts at 0ºC but water also freezes at 0ºC, what is the difference between melting and freezing in terms of ... 8. The energy involved in the phase changes and 9. The motion of the particles of the substances during the phase changes?

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or - 0.408 M

How do meteror showers happen

Vinegar, fruit juice and cola are examples of A: strong acids B: strong bases C: weak acids D: weak bases

During photosynthesis plants make their own food, what else is a product of photosynthesis?

What happens when the silvered coin is put on the flame

Do simple molecules conduct electricity? and why?

C) 2,2-dimethyl-3-heptyne how to draw

What is the difference between a solute and a solvent?

A 100 g sample of an unknown liquid absorbs 2000 j of heat energy, raising the liquid's temperature from 50 ◦ c to 70 ◦ c. what is the specific heat capacity of this liquid? no phase change took place.