Water can be found in many forms: tap water, spring water, sparkling water, sea water, distilled water, flavoured water, etc. only one of these forms is not a mixture. identify this form and explain your answer.

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?

What is the number of moles in 15.0 g ash3?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?