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Eva8 [605]
3 years ago
11

( 9 + 5 ) + ( 13 + 12 ÷ 4 )​

Chemistry
1 answer:
ipn [44]3 years ago
3 0

Answer:

9+5=14

13+12=25

then ÷by 4

or answer is 0.0114285714

Explanation:

first you just think it

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If 4.50 l of water vapor at 50.2 °c and 0.121 atm reacts with excess iron, how many grams of iron(iii) oxide will be produced?
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When the balanced equation for this reaction is:
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PV= nRT
when we have P is the vapor pressure of H2O= 0.121 atm
and V is the volume of H2O = 4.5 L
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we can get the Mass of Fe2O3 from this formula:
Mass = number of moles * molecular weight       
  when we have a molecular weight of Fe2O3 = 159.7
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