si un atomo de un metal se combina con 2atomos de oxígeno para dar un óxido neutro¿cuál es la valencia de ese metal?​

If a certain battery supplies 1.0×108 electrons per second to the negative terminal and the battery contains 7.00 moles of electrolytic solution (which means the solution contains 7.00 moles of hso4), what fraction of the solution undergoes a chemical reaction each second

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

What is the correct lewis structure for chloroform chcl3