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My name is Ann [436]
2 years ago
9

What is the relationship between a compound and the elements it is made from?

Chemistry
1 answer:
dalvyx [7]2 years ago
6 0
<span>The compound may have properties that are very different from those of the elements it is composed from.</span>
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A 1.00 L flask is filled with 1.10 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pres
Alex Ar [27]

Answer: a) Partial pressure of argon is 0.673 atm.

b) Partial pressure of ethane is 0.427 atm.

Explanation:

According to the ideal gas equation:'

PV=nRT

P = Pressure of the argon gas = ?

V= Volume of the gas = 1.00 L

T= Temperature of the gas = 25°C = 298 K       (0°C = 273 K)

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas = \frac{\text {given mass}}{\text {Molar mass}}=\frac{1.10g}{40g/mol}=0.0275moles

P=\frac{nRT}{V}=\frac{0.0275\times 0.0821\times 298}{1.00}=0.673atm

Thus the partial pressure of argon is 0.673 atm.

b) According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_1+p_2

p_{total}=p_{Ar}+p_{ethane}

1.100=0.673+p_{ethane}

1.100-0.673=p_{ethane}

p_{ethane}=0.427atm

Thus partial pressure of ethane is 0.427 atm.

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3 years ago
Lead is listed below zinc in the activity series.
nikdorinn [45]

Answer:

Zn+Pb(NO3)2→Zn(NO3)2+Pb

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1. Describe the motion of gas particles.
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The particles in a solid are tightly packed and locked in place. ... The particles in a liquid are close together (touching) but they are able to move/slide/flow past each other. The particles in a gas are fast moving and are able to spread apart from each other.

Explanation:

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In general, which of the following statements about electron-pair geometries is true?
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same

Explanation:

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3. You are a water molecule in the ocean and are getting ready to move through the water cycle. Please describe your journey thr
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Water moves from the ground or oceans into the atmosphere through a process called evaporation. It's a process that happens on a molecular level when the molecules of water are really energized and rise into the air. Now you've got water in the air and water on land. Organisms all over the Earth need water to survive.

Explanation:

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