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At STP, $0.280 \mathrm{L}$ of a gas weighs $0.400 \mathrm{g}$. Calculate the molar mass of the gas.

$$32 \mathrm{g} / \mathrm{mol}$$

Chemistry 101

Chapter 5

Gases

University of Central Florida

Rice University

Drexel University

Lectures

05:03

In physics, a gas is one of the three major states of matter (the others being liquid and solid). A gas is a fluid that does not support tensile stress, meaning that it is compressible. The word gas is a neologism first used by the early 17th-century Flemish chemist J.B. van Helmont, based on the Greek word ("chaos"), the simplest of all the elemental forms of matter.

04:46

In physics, thermodynamics is the science of energy and its transformations. The three laws of thermodynamics state that energy can be exchanged between physical systems as heat and work; that the total energy of a system can be calculated by adding up all forms of energy in the system; that energy spontaneously flows from being localized to becoming dispersed, spread out, or uniform; and that the entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.

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At STP, 0.280 L of a gas w…

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Calculate the molar mass o…

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in this problem there, given the volume off the gas and syrup plane to a litres and mass and 0.4 grams at S T P. So that makes tea to 73 k and p one a. T m. We have to solve for the molar mass. We can use the ideal gas law to do this PV equals and r t, where n is equal to mass over molar mass. Times are t rearrange this and you get this equation to Seoul for the Moeller Mass. And then you can just plug in the values that we have so point for dreams. Names are which is a constant and to 73 k Divide all that by the pressure 1 80 year and will you through a point to 80 litres and you get a Moeller Mass off 32 grams per mole as the final answer.

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