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ZanzabumX [31]
3 years ago
14

How much energy is needed to turn 23 g of water completely into steam if it starts at a temperature of 8.0oC?

Chemistry
1 answer:
asambeis [7]3 years ago
6 0

Answer:

69% energy

Explanation:

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The electron pair geometry of a molecule is tetrahedral. What is its bond angle if it shows one lone pair of electrons and three
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Reaction Rate is the rate at which a substance undergoes a chemical change.

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3 years ago
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yanalaym [24]

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4 0
3 years ago
Consider the reaction 2 al + Fe2O3 to 2Fe + Al2O3. If 60.0g of Al is reacted with excess Fe2O3, determine the amount (in moles)
olganol [36]

 The  amount  of  Al2O3  in moles=  1.11 moles    while in  grams   = 113.22 grams


    <em><u>calculation</u></em>

     2 Al  + Fe2O3 → 2Fe  + Al2O3

    step  1: find the moles of Al  by  use of <u><em>moles= mass/molar  mass  </em></u>formula

    =  60.0/27= 2.22  moles


    Step 2: use the mole ratio to determine the  moles of Al2O3.

 The  mole ratio  of Al : Al2O3 is  2: 1 therefore the moles of Al2O3= 2.22/2=1.11  moles


Step 3:    finds the mass  of  Al2O3  by us of  <u><em>mass= moles x molar mass</em></u><em> </em>formula.

The molar  mass of Al2O3  =  (2x27)  +( 16 x3) = 102  g/mol

mass is therefore=  102  g/mol  x 1.11= 113.22 grams


             

7 0
3 years ago
PLEASES HELP ASAP
pentagon [3]
The 02 is a solid. I hope thus helped you :)
6 0
3 years ago
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