En Una mezcla de gases a 20 °C las presiones ejercidas por los componentes son Pco= 150mmhg, PHz-200mmhg, PcH4=320mmHg, PC2H4 105mmHg, a) Cual es la presión total de la mezcla b) Porcentaje de H₂ en volumen​

What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?

Which of the following involves only abiotic factors? a. a large rock being weathered by wind and rain b. an otter using a stone to break open a sea urchin c. a spider building a web in the corner of a building d. a pine tree absorbing light from the sun

How many moles of potassium nitrate, kno3 are present in a sample with a mass of 85.2 g?