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inessss [21]
2 years ago
7

a bottle of rubbing alcohol is labeled 70%(v/v) how many milliliters of isopropyl alcohol are in a 400ml bottle of this solution

?
Chemistry
1 answer:
xz_007 [3.2K]2 years ago
3 0
 The number of   milliliters  of  isopropyl alcohol that are  in   a 400 ml bottle  of this solution  is 280 Ml

   calculation

  % V/V =  volume of  solute/ volume  of  solution  x 100
 Let the volume  of solute  be =  y  ml
 the volume  of  solution =  400 ml
convert 70%  to fraction = 70/100

 by  substituting  the value  in the equation 

 = y  ml/  400 ml =  70/100

by cross  multiplication

100y =400 x70
100y=  28000
y= 280 ml
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<h3>Answer:</h3>

9 mol H₂O

<h3>General Formulas and Concepts:</h3>

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<u>Pre-Algebra</u>  

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<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 6H₂ + O₂ → 3H₂O

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[Solve] mol H₂O

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<u>Step 3: Stoich</u>

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3 0
3 years ago
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