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A 2.10 -L vessel contains $4.65 \mathrm{g}$ of a gas at $1.00 \mathrm{atm}$ and $27.0^{\circ} \mathrm{C}$. (a) Calculate the density of the gas in grams per liter. (b) What is the molar mass of the gas?

$$\begin{array}{l}2.2 \mathrm{g} / \mathrm{L} \\54.5 \mathrm{g} / \mathrm{mol}\end{array}$$

Chemistry 101

Chapter 5

Gases

Carleton College

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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in this problem, we are given a volume off 2.1 liters. Pressure one a t m. Temperature 27 degree Celsius, which has to be converted to Calvin, gives us 300 killed in and a mess. 4.65 grams we have to solve. For then city density is grams poor litres. So it's mess over Wall Youm, which equals two 4.65 grams over 2.1 litres. So we get a density over 2.2 grams per liter. Next we have to solve for the Moeller mess again. Mueller Mass can be found using PV and RT the ideal gas law so PV and the end can be replaced as mass times smaller mass over more mass times r t So we get the equation for more math as last times rt over PV where a mass is 4.65 grams. Are is the constant dear 0.8 to 1 litres a t m over more okay, in temperature off 300 Kelvin All off it. Over Off it. It's departed by PV one a. T. M. Times two point one liters. We get a molar mass off 54 point five grams per mole as their final answer for part B

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