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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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tonya1807 tonya1807
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11 years ago
What is the molarity of the following solutions?

1. 20.0 g NaHCO3  in 250.0 mL  solution

2. 24.0 g H2SO4  in 380.0 mL  solution

3. 28.0 g NaCl   dissolved to make 420.0 mL solution
PLEASE HELP!
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#1
11 years ago
Just in case you didn't know, molarity is the same as concentration. To solve these problems will require two steps with two essential equations.

1. Work out the number of moles from the mass given (n=m/Mr).
2. Work out the concentration of the solution (c=n/v). Don't forget that v (the volume) must be in litres!
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