3 years ago

In order to boil, a liquid's vapor pressure must be greater than the pressure of the atmosphere.

Chemistry

1 answer:

hjlf3 years ago

5 0

The anwser is false.

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3 years ago

A can of coke contains 25 mL of carbon dioxide gas at 100kPa. If you take it on a hike up Mount Everest and the pressure decreas

Mazyrski [523]

Answer:

50 mL

Explanation:

We can solve this problem by using Boyle's Law, which states that:

"For a fixed mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

$p\propto \frac{1}{V}$

where

p is the pressure of the gas

V is the volume of the gas

The equation can be rewritten as

$p_1 V_1 = p_2 V_2$

where in this problem:

$p_1 = 100 kPa$ is the initial pressure of the gas in the coke

$V_1=25 mL$ is the initial volume

$p_2=50 kPa$ is the final pressure

Solving for V2, we find the final volume:

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4 years ago

What is the osmotic pressure of a 100 ml of toluene solution that contains a total of 0.005 moles of a polymer dissolved in it a

allsm [11]

Osmotic pressure is the pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis.

That can be mathematical computed from the expression:

Osmotic pressure=C×R×T

Where,

C= Concentration

R=Gas constant

T=Temperature

Concentration=Number of moles of solute/Volume(L)

=0.005*1000/100

=0.05

R= 0.08206 atm L/mol K

T=25+273

=298

Osmotic pressure= 0.05×0.08206×298

=1.2 atm

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3 years ago