%masa/masa :Si se disuelve 25g de alcohol en 90g de agua ¿Cual es el porcentaje de alcohol en la solución?

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.