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mamaluj [8]
3 years ago
8

What is the total number of moles contained in 115g of C2H5OH?

Chemistry
1 answer:
julsineya [31]3 years ago
6 0
2.4962859606272754 moles of C2H5OH
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Can you guys help me with this one part?
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2 years ago
A sample of gas has a density of 0.53 g/L at 225 K and under a pressure of 108.8 kPa. Find the density of the gas at 345 K under
sukhopar [10]

Answer:

\rho _2=0.22g/L

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Hello!

In this case, since we are considering an gas, which can be considered as idea, we can write the ideal gas equation in order to write it in terms of density rather than moles and volume:

PV=nRT\\\\PV=\frac{m}{MM} RT\\\\P*MM=\frac{m}{V} RT\\\\P*MM=\rho RT

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\rho _2=\frac{\rho _1T_1P_2}{P_1T_2}

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2 years ago
How can the speed of solvent molecules be slowed down?
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Explanation:

The speed of molecules increases when temperature is increased as it will result in more number of collisions between the molecules. Thus, there will be  increase in kinetic energy of molecules and increase in the speed of solvent molecules.

Whereas on decreasing the temperature, the kinetic energy of molecules will decrease. This will result in less number of collisions between the molecules. Therefore, the speed of solvent molecules will slow down.

7 0
3 years ago
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