7. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to 500 mm Hg?
1 answer:
Answer:
The volume is
<h2>180 mL</h2>Explanation:
In order to solve for the volume we use the formula for Boyle's law which is
<h3>where
P1 is the initial pressure
V1 is the initial volume
P2 is the final pressure
V2 is the final volume
Since we are finding the final volume we are finding V2
Making V2 the subject we have
<h3>From the question
P1 = 300 mmHg
V1 = 300 mL
P2 = 500 mmHg
Substitute the values into the above formula and solve for the final volume obtained
That's
<h3>We have the final answer as
<h3>180 mL</h3>Hope this helps you
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Answer:
Density, melting point. and magnetic properties
Explanation:
I can think of three ways.
1. Density
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It should be possible to distinguish these even with high school equipment.
2. Melting point
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A Bunsen burner can easily reach these temperatures.
3. Magnetic properties
You can use a Gouy balance to measure the magnetic susceptibilities.
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In CuS the Cu²⁺ ion has a d⁹ electron configuration, so all there is an unpaired electron and the solid is paramagnetic.
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A sample of CuS will be attracted by the magnetic field and show an increase in weight.
In the picture below, you can see the sample partially suspended between the poles of an electromagnet.
