A sample of an unknown liquid is vaporized in a flask having a volume of 298 mL at 100.0°C. The vapor has a mass = 0.687 g, and exerts a pressure = 775 torr. Calculate the molecular weight of the unknown liquid.

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange