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11 Dec 2019

The vapor pressure of water changes with temperature, as shown here.

T (?C) P (torr)
21 18.7
22 19.8
23 21.1
24 22.4
25 23.8
26 25.2
27 26.7
28 28.4
29 30.0
30 31.8

Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 4.72×10?4 mol (from part A).

Express your answer to three significant figures and include the appropriate units.

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Bunny Greenfelder
Bunny GreenfelderLv2
13 Dec 2019

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Related questions

± Electrolysis and Current

The vapor pressure of water changes with temperature, as shown here.

T (∘C) P (torr)
21 18.7
22 19.8
23 21.1
24 22.4
25 23.8
26 25.2
27 26.7
28 28.4
29 30.0
30 31.8

A student designs an ammeter (a device that measures electrical current) that is based on the electrolysis of water into hydrogen and oxygen gases. When electrical current of unknown magnitude is run through the device for 4.00 min , 16.9 mL of water-saturated H2(g) is collected. The temperature and pressure of the system are 25 ∘C and 715 torr.

How many moles of hydrogen gas are produced?

Express your answer to three significant figures and include the appropriate units.

A student designs an ammeter (a device that measures electrical current) that is based on the electrolysis of water into hydrogen and oxygen gases. When electrical current of unknown magnitude is run through the device for 3.50 min , 13.5 mL of water-saturated H2(g) is collected. The temperature and pressure of the system are 25 ∘C and 715 torr.

The vapor pressure of water changes with temperature, as shown here.
T (∘C) P (torr)
21 18.7
22 19.8
23 21.1
24 22.4
25 23.8
26 25.2
27 26.7
28 28.4
29 30.0
30 31.8

Q7:

The vapor pressure of water changes with temperature, as shown here.

A student designs an ammeter (a device that measures electrical current) that is based on the electrolysis of water into hydrogen and oxygen gases. When electrical current of unknown magnitude is run through the device for 3.50 min , 15.7 mL of water-saturated H2(g) is collected. The temperature and pressure of the system are 25 ∘C and 715 torr.

Part A

How many moles of hydrogen gas are produced?

Express your answer to three significant figures and include the appropriate units.

T (∘C) P (torr)
21 18.7
22 19.8
23 21.1
24 22.4
25 23.8
26 25.2
27 26.7
28 28.4
29 30.0
30 31.8

A student designs an ammeter (a device that measures electrical current) that is based on the electrolysis of water into hydrogen and oxygen gases. When electrical current of unknown magnitude is run through the device for 3.50 min , 15.7 mL of water-saturated H2(g) is collected. The temperature and pressure of the system are 25 ∘C and 715 torr.

Part A

How many moles of hydrogen gas are produced?

Express your answer to three significant figures and include the appropriate units.

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