Calculate the work done (in joules) by the reaction 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

when 0.81 g of Na reacts with water to form hydrogen gas at 0°C and 1.0 atm.

Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Is powdered sports drink ionic or covalent ? 10pts !