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12345 [234]
3 years ago
12

Balance the equation Mg+Fe2O3->MgO+Fr

Chemistry
2 answers:
Readme [11.4K]3 years ago
8 0

Answer:

3Mg +Fe2O3 ---> 3 MgO + 2Fe

Explanation:

3Mg +Fe2O3 ---> 3 MgO + 2Fe

Mg  3                     Mg    3

Fe    2                    Fe     2

O     3                       O     3

before                     after

sergij07 [2.7K]3 years ago
4 0

Answer:

3Mg + Fe2O3 = 2Fe + 3MgO

Explanation:

Make sure the number of each element equal on both right and left hand side

Eg. There are 3 molecules of oxygen on left hand side so to balance right hand side add a 3 in front of MgO, because you've added a 3 in front of MgO you now have to add a 3 in front of Mg on the left hand side to balance it out and continue to do so for the rest of the chemical equation.

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How many moles are in 153 grams of O2?
Tatiana [17]

Answer:

4.78 mol O2

Explanation:

Grams --> moles

Grams/molar mass = moles

153 g O2 / 32 g/mol O2 = 4.78125 (significant figures so round it up; the grams has 3 significant figures, so round it up) 4.78 mol O2

8 0
3 years ago
The reaction of a quantity of sulfur trioxide with water gives an acid with a volume of 2 l, containing 1.8 mol of the dissolved
777dan777 [17]

Answer :]

A.)Calculate the mass of ammonium sulfate that would be obtained by reacting with ammonia acid.

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2 years ago
What mass of C6H8O7 should be used every 7.0 X 10^2mg NaHCO3
Savatey [412]

Mass C₆H₈O₇ : 0.531484 g

<h3>Further explanation</h3>

Reaction

3NaHCO₃ (aq) + C₆H₈O₇ (aq) → 3 CO₂ (g) + 3 H₂O (l) + Na₃C₆H₅O₇ (aq)

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mass NaHCO₃ : 7.10² mg=0.7 g

mol NaHCO₃ :

\tt mol=\dfrac{0.7}{84}=0.0083

mol C₆H₈O₇ :

\tt \dfrac{1}{3}\times 0.0083=0.00277

MW C₆H₈O₇ : 192 g/mol

mass C₆H₈O₇ :

\tt mass=0.00277\times 192=0.53184

4 0
2 years ago
What is the smallest division on this balance?
sesenic [268]
0.001 would be the smallest.

Good Luck! :)
4 0
3 years ago
Read 2 more answers
Compound element ratio of 1:2:6<br> Ba(NO3)2+Na2SO4
Karo-lina-s [1.5K]

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Ba(NO3)2

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NaNO 3

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5 0
3 years ago
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