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ankoles [38]
3 years ago
14

An inexpensive and accurate method of measuring the quantity of electricity passing through a circuit is to pass it through a so

lution of a metal ion and weigh the metal deposited. A silver electrode immersed in an Ag solution weighs 1.7854 g before the current passes and weighs 1.9274 g after the current has passed. how many coulombus have passed?
Chemistry
1 answer:
vovangra [49]3 years ago
5 0

Answer:

127.013 C

Explanation:

-We apply Faraday's First Law of Electrolysis which states that the mass,m of a substance deposited is directly proportional to the current,Q passed through it:

m=ZQ

Where Z is the proportionality constant(g/C)

-The current can therefore be calculated as:

m=ZQ\\\\Z=\frac{Atomic \ mass \ of \ substance}{Faraday's \ Constant}\\\\=\frac{107.8682}{96485}\\\\=0.001118\ g/C\\\\\\Q=\frac{m}{Z}\\\\m=\bigtriangleup m=1.9274-1.7854=0.142 \ g\\\\\therefore Q=\frac{0.142\ g}{0.001118g/C}\\\\=127.013 \ C

Hence, the amount of current through the circuit is 127.013 C

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Explanation:

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3 years ago
How many orbitals would mercury (Hg) have?
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6 orbitals

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3 years ago
I need help on this someone please help
Murljashka [212]

1) Dawn dish soap has a density of 1.06 g/mL. If the mass of a sample of the liquid is 1.00 g what is the volume?

Answer:

v = 0.94 mL

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Given data:

Density of soap =  1.06 g/mL.

Mass  = 1 g

Volume = ?

Solution:

d = m/v

v = m/d

v = 1 g/1.06 g/mL

v = 0.94 mL

2) Maple syrup has a density of 1.37 g.mL. What is the mass of 1.0 L of the maple syrup?

Answer:

m = 1370 g

Given data:

Density of soap =  1.37 g/mL.

Mass  = ?

Volume = 1.0 L ( 1000 mL)

Formula:

D=m/v

D= density

m=mass

V=volume

Solution:

d = m/v

m = d × v

m = 1.37 g/mL  ×  1000 mL

m = 1370 g

3) The density of gasoline is 0.754 g/mL. A drop of gasoline has a mass of 22 g what is the volume?

Answer:

v = 29.2 mL

Given data:

Density of soap =  0.754 g/mL.

Mass  = 22 g

Volume = ?

Formula:

D=m/v

D= density

m=mass

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Solution:

d = m/v

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v = 22 g/0.754 g/mL

v = 29.2 mL

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Create a model of the atoms of a substance moving through the solid liquid and gas states
butalik [34]

Answer:

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Explanation:

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