Se disuelven 48g de una sustancia X en 80.0g de H, O. Si la molalidad de la solución es 0.30, determine el peso molecular de la sustancia:

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

When the water vapor cools it condenses select a number that represents his process on the