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shutvik [7]
2 years ago
8

(PLEASE HELP DUE TODAY!) A gas has a volume of 1000.0 mL at a temperature of 20.OK and a pressure of 1.0 atm. What will be the n

ew volume when the temperature is changed to 40.0K and the pressure is changed to
0.5 atm?
Chemistry
1 answer:
Nataliya [291]2 years ago
7 0

Answer:

4 L or 4000 mL

Explanation:

This question asks for the use of combined gas law:

(P1)(V1) / (T1) = (P2)(V2) / (T2)

...where pressure (P) is in atm, volume (V) is in liters, and temperature (T) is in kelvin.

1000 ml is 1 L, and everything else is already in the right units.

(1 atm)(1 L) / (20 K) = (0.5 atm)(V2) / (40 K)

Just solve the equation for V2, and you get a new volume of 4 liters

(1)(1) / (20) = (.5x) / (40)

1 / 20 = .5x / 40

2 = .5x

x = 4

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3 years ago
Match the following names of glassware with what you would use them for.
Valentin [98]

Answer:

A) Graduated pipette – Glassware used to accurately transfer small volumes.

B) Volumetric pipette – Glassware used to accurately transfer a small, single volume.

C) Beaker – Glassware best used when greater access to the contents is needed.

D) Buret – Glassware used to deliver a volume not known in advance.

E) Erlenmeyer flask – Glassware used to prevent splashing or evaporation.

F) Volumetric flask – Glassware used to make accurate solutions.

Explanation:

Graduated pipette – Glassware used to accurately transfer small volumes.

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Volumetric pipette – Glassware used to accurately transfer a small, single volume.

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Beaker – Glassware best used when greater access to the contents is needed.

Beaker is the most widely used glassware in the laboratory. They are used to transfer large volume with less accuracy. They are of different sizes depends on the size of volumes ranging from 10 mL to 1000 mL.

Buret – Glassware used to deliver a volume not known in advance.

Buret is the most important glassware in the quantitative analysis. It has a glass tube with scale which measures the volume and a stopcock at one end from which the solvent is dispersed. It is used to measure the volume of the liquid during the titration in the quantitative analysis.

Erlenmeyer flask – Glassware used to prevent splashing or evaporation.

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Volumetric flask – Glassware used to make accurate solutions.

The volumetric flask is also an important glassware in the analytical laboratory. It is used to prepare standard solutions. It is a flask which has a ring like marking that is its calibrated volume. The mentioned volume of volumetric flask is calibrated to have accurate volume.

3 0
2 years ago
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Tomtit [17]

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How many moles of carbon are in 25 grams of carbon
Brut [27]

Answer:

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Explanation:

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masya89 [10]

Answer:

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