To create the liquid and superfluid states you cool down helium gas to a few degrees above absolute zero
From what i understood from the question,the answer is organ
Considering the definition of molarity, 4.02 liters of ammonium sulfate are created if 17.3 moles of solute are dissolved to make a 4.3 M solution.
<h3>Molarity</h3>
Molarity is a measure of concentration that indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:
Molarity is expressed in units .
<h3>This case</h3>
In this case, you know:
- molarity= 4.3 M= 4.3
- number of moles of the solute= 17.3 moles
- volume= ?
Replacing:
Solving:
4.3 × volume= 17.3 moles
volume= 17.3 moles÷ 4.3
<u><em>volume= 4.02 liters</em></u>
4.02 liters of ammonium sulfate are created if 17.3 moles of solute are dissolved to make a 4.3 M solution.
Learn more about molarity with this example:
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In this question, you are asked to find two condition which was:
1. Same phase at STP( standard temperature and pressure)
2. Different structure and properties
In option 1 and 4 the phase of the element is different. It was solid+gas for option 1 and solid+liquid for option 4. That clearly not fulfills the first condition.
At STP helium is gas but mercury should be liquid, not gas. That means option 3 won't fulfill the 1st condition too.
Option 2 is true since both of them gas and their structure and properties are different. One example of properties is that oxygen doesn't have an odor but ozone has.
The London Dispersion force s a temporary attractive
force that results when the electrons in two adjacent atoms occupy positions
that make the atoms form temporary dipoles. And because of this, the London
Dispersion force is considered to be the weakest intermolecular force.