un jugador durante su entrenamiento en el campo se desplaza 10 metros hacia el este y 15 metros hacia el norte, todo en 40 segundos ¿cuál es su velocidad media en unidades de kilómetros/hora?​

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.