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At 741 torr and $44^{\circ} \mathrm{C}, 7.10 \mathrm{g}$ of a gas occupy a volume of 5.40 L. What is the molar mass of the gas?

$$35.1 \mathrm{g} / \mathrm{mol}$$

Chemistry 101

Chapter 5

Gases

Rice University

Drexel University

Brown 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.

04:30

At 741 torr and $44^{\circ…

05:49

3. At 741 torr and 44 *C, …

03:29

What is the molar mass of …

01:25

05:45

01:22

A sample of gas has a mass…

06:08

in this question, you will have to apply to formula first formula. A number off more equals two mass over molar mass. 2nd 1 is the ideal gas law. So Pee Wee equals two and r t So from this formula, you can you can ah pluck it in into this formal. So you have PV closed to you mass offer mullah mask times times are t right. Okay. And we make moulder masses the subject because Mullan matches what you looking for in the question So molar mass issue closed Two more mass to the left side and bring everything to the right. So you have em. Oh, are t divided by pressure times volume. So in the question, they already give you the temperature, give you the mass and give you the balding But you don't know the pressure, but from from the information we tell you for Inger 741 tour. What? Just be closed to you for engine and save 141 um, mercury Always it rough. So from this you can do the conversion convert back to NTM in order to pluck it into the P right here. So once do the conversion, you should have 0.97 58 p. M. And how you have all the adamant. You have pressure, you have to volume provided by the question, and you have to temperature provided by the question. And also you have the are, which is the constant, and then you plug everything back into the equation. You should have ah so for for the mass used to cast 7.1 gram, multiply by 0.8 to 1 after constant and multiply by. The temperature given is 44 degree Celsius and M plus 2 73 to make it Calvin and then divided by zero point my seven 58 e n times. Volume given is 5.4 old and you punched the whole number into the calculator. You should get your answer as 35 1 35.1 gram promote

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