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KatRina [158]
3 years ago
5

Iron forms rust, expressed as: Fe2O3. Using information from the Periodic Table, what is the mass of one mole of Fe2O3?

Chemistry
2 answers:
nika2105 [10]3 years ago
8 0
The answer is C, 159.70g
sasho [114]3 years ago
6 0

Answer:

The correct answer is option C.

Explanation:

Atomic mass of iron =  55.845 g/mol

Atomic mass of oxygen = 15.999 g/mol

Mass of 1 mole of iron(III) oxide , Fe_2O_3:

2\times 55.845 g/mol+3\times 15.999 g/mol=159.687 g/mol

159.687 g/mol ≈ 159.70 g/mol

159.70 g/mol is the mass of one mole of iron(III) oxide.

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Many grams of aluminum are required to produce 3.5 moles Al2O3 in the presence of excess O2?
Aleks [24]
The  grams  of aluminum  that are required   to produce  3.5  moles of AlO3  in  presence of excess O2   is calculated as  below

write  the  equation for reaction
4 Al + 3O2 =2 Al2O3

by use of mole  ratio between  Al  to  Al2O3   which  is  4 :2  the moles of  Al 
=3.5 x4/2 = 7  moles

mass of Al  =  moles /   x molar mass

= 7 moles  x27 g/mol  =189  grams

4 0
3 years ago
How does atomic hydrogen torch function for cutting and welding purposes​
lbvjy [14]

Explanation:

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Learn More:

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5 0
3 years ago
Below is a picture of two blocks made of different materials. Block A Block B grams grams If Block A is located on the Moon and
AURORKA [14]

Answer:

A

Explanation:

this is because density is the mass per unit volume of an object

4 0
3 years ago
Which Of the following compounds is an electrolyte?
Anettt [7]
Hello,

Here is your answer:

The proper answer to this question is option D "<span>sodium hydroxide".

Here is how:

Sodium Hydroxide its a white substance that is a </span><span>electrolyte.

Your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!</span>
8 0
3 years ago
Plz help which this it is the digestive system
myrzilka [38]
I honestly have no clue on this one
8 0
3 years ago
Read 2 more answers
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