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2 years ago

What is the length of one mole of the typical cell phone that is approximately 15 cm in length?

Chemistry

2 answers:

Solnce55 [7]2 years ago

7 0

Answer:

Some objects of more than 15 cm and less than 30 cm can be:

A rule.

A cell phone.

A pencil.

A calculator.

A laptop charger.

We have to measure it helps us to compare and to obtain physical magnitudes of different objects.

Measurement is the action of obtaining a representative magnitude of a particular object, now, to measure we need to compare and have reference points.

See more at brainly.lat/tarea/3935004.

Explanation:'

I hope my answer is to your liking; 3 gi v me a crown, please

Salsk061 [2.6K]2 years ago

4 0

i dont know how to remove my answer so ignore this

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2 years ago

The ion MnOis often used to analyze for the Fe2+ content of an aqueous solution by using the (unbalanced) reaction Mno+Fe2+ + Fe

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B) 0.230 M

Explanation:

The first step is to balance the reaction between the Ferrous ion and the permanganate ion:

$5~Fe^+^2~+~MnO_4^-^1~+~8H^+~->~5Fe^+^3~+~Mn^+^2~+4H_2O$

Then we have to calculate the moles of $MnO_4^-$ :

$M~=~\frac{mol}{L}$

$mol~=~M*L$

$mol~=~0.033~M*0.0633L=~0.002088~mol~MnO_4^-$

Then using the molar ratio we can find the moles of $Fe^+^2$ :

$0.002088~mol~MnO_4^-\frac{5~mol~Fe^+^2}{1~mol~MnO_4^-}=0.01044~mol~Fe^+^2$

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2 years ago