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. If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?. Answer . . . . . . . . A) 2.3 M CaCl2. B) 0.44 M CaCl2. C) …
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. If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?. Answer . . . . . . . . A) 2.3 M CaCl2. B) 0.44 M CaCl2. C) …
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. If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?. Answer . . . . . . . . A) 2.3 M CaCl2. B) 0.44 M CaCl2. C) 0.70 M CaCl2. D) 3.0 M CaCl2 .
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Number of moles = 2.1 moles of CaCl2
Volume in liters = 0.92 L
Molarity = ?
M = n / V
M = 2.1 / 0.92
=
2.3 M
Answer A
hope this helps!
Narendra Prasath
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Apr 7, 2017
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Narendra Prasath
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The definition is M = moles/L. Punch into the calculator and go. Remember to round to two significant figures.
molarity ,=no of mole of solute/volume in liter
2.1/0.92=2.28mole/l
molarity = 2.3 mole/L
Cyprien Autexier
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Apr 13, 2017
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