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Naily [24]
1 year ago
15

How many particles are in 2.5 mol of water, H2O?

Chemistry
2 answers:
scZoUnD [109]1 year ago
8 0
There are 1.5x1024 molecules
LUCKY_DIMON [66]1 year ago
3 0

Answer: 1.5×1024 molecules

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notka56 [123]

The compound FeCl3  is made  of  one atom  and three  atoms  of chlorine


    <u><em>explanation</em></u>

  • FeCl3  is made up of two elements.
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A ring costs $36 more than a bracelet. the cost of the bracelet is 4/7 the cost of the ring. find the total of the two items.
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So let's use some equations to represent the data [let R= cost of ring & B= cost of bracelet]

R= B + $ 36 .... (1)

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By using simultaneous equations to solve for B and R.
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      B =  \frac{4}{7} × (B + $36)

      B = \frac{4}{7}B + \frac{144}{7}

     ( \frac{7}{7}  -  \frac{4}{7} ) B =  \frac{144}{7}

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By substituting value of B into ea (1)

If R = B + $36
   
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∴  <span> the total of the two items = R + B
                                             = $84 + $48
</span>                                             = $132

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