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aliya0001 [1]
3 years ago
8

Which phase of matter has a fixed volume, but variable shape?

Chemistry
2 answers:
Pani-rosa [81]3 years ago
7 0

Answer: liquid

Explanation: a liquid has a volume that does not change (unless you add more or less liquid to it, obviously) but its shape can change depending on the container you use.

Think, if you put a liter of water into a bucket, it will still be a liter of water if you pour it into a water bottle. The only thing different is that the shape of the liquid changes.

Nookie1986 [14]3 years ago
5 0

Answer:

b.)  liquid

Explanation:

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What is the volume of ammonia produced at 243 K at a pressure of 1.38 atm by the unbalanced reaction on the left if 5740 moles o
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Answer:

49671 L is the produced volume of ammonia

Explanation:

We think the reaction of ammonia 's production:

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We have the moles of each reactant so let's determine the limiting reactant:

Ratio is 1:3. 1 mol of nitrogen reacts with 3 moles of H₂

Then, 1720 moles of N₂ will react with (1720 .3) /1 = 5160 moles of H₂

We have 5740 moles of hydrogen, so we have enough hydrogen. This is the excess reagent, so the limiting is the N₂

1 mol of N₂ can produce 2 moles of ammonia

Therefore 1720 moles of N₂ will produce (1720 . 2) /1 = 3440 moles of NH₃

We apply now, the Ideal Gases Law → P . V = n . R .T

V = (n . R . T) /P → V = (3440 mol . 0.082 L.atm/mol.K . 243K) / 1.38 atm

V = 49671 L

We confirm that the nitrogen was the limiting reactant

3 moles of H₂ need 1 mol of nitrogen to react

Therefore, 5740 moles of H₂ will react with (5740 . 1) /3 = 1913 moles of N₂

It was ok to say, that N₂ was the limiting reactant because we need 1913 moles in the reaction, and we only have 1720 moles

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3 years ago
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The concentrations : 0.15 M

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<h3>Further explanation</h3>

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\tt pOH=-log[OH^-]\\\\pOH=3-log~1.64=2.79\\\\pH=14-2.79=11.21

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