it's means two plural phenomenon and object or aspect known for through the sentence rather than by dot or intuition a temporal or spout temporal object of sensory experience as discussion from a nominal

6 0

3 years ago

List the major types of intermolecular forces in order of increasing strength. Is there some overlap? That is, can the strongest

Doss [256]

Answer:

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Explanation:

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6 0

3 years ago

A balanced chemical equation must have the same number of which of these on both sides of the equation?

andrew11 [14]

A balanced equation must have the same number of atoms on the both sides of equation.

4 0

3 years ago

A mixture of CO2 and Kr weighs 41.0 g and exerts a pressure of 0.729 atm in its container. Since Kr is expensive, you wish to re

Elena-2011 [213]

Answer:

a) 24.31 g

b) 16.69 g

Explanation:

A mixture of CO2 and Kr weighs 41.0 g and exerts a pressure of 0.729 atm in its container.

After the CO2 is completely removed by absorption with NaOH(s), the pressure in the container is 0.193 atm.

Therefore, Pressure of Kr = 0.193 atm

Pressure of CO2 = 0.729 - 0.193 = 0.536 atm

Their mole fraction can be also determined as follows:

CO2 = $\frac{Presssure due to CO_2}{Total pressure}$

CO2 = $\frac{0.536}{0.729}$

= 0.735

Also; for Kr ; we have

Kr = $\frac{0.193}{0.729}$

Kr = 0.265

Molar mass of CO2 = 44 g/mol

Molar mass of Kr = 83.78 g/mol

Mass of CO2 = mole fraction * molar mass = 0.735 * 44 = 32.34

Mass of Kr = 0.265 * 83.78 = 22.20

Total mass = 32.34 +22.20 = 54.54

The Percentage of gas in mixture is as follows:

% CO2 = $\frac{32.34}{54.54}$ * 100 %

= 0.5930

= 59.30%

(a) Mass of CO2 in mixture = 0.5930* 41 g = 24.31 g

% Kr = $\frac{22.20}{ 54.54}$ * 100 %

= 0.407

= 40.70 %

(b) Mass of Kr in mixture = 0.407 * 41 = 16.69 g

4 0

4 years ago