1. What is the molar of a sodium bicarbonate solution prepared from 150 g of NaHCO3 in 150 mL solution?
2. What mass of glucose (C6H12O6) is needed to prepare a solution of 10 M, 5 L solution?
3. What volume in liters of a 4.0 M Ca(NO3)2 is needed to provide 50 g Ca(NO3)2?
1 answer
I'm assuming for the first question you meant molar concentration.. if this is the case use the formula c=n/v (or concentration equals mass divided by volume) so you would first find the molar mass of sodium bicarbonate (i'm assuming you know how to do that) and use the formula n= m/M or the number of moles equals the mass of the substance divided by molar mass... for numbers two and three used similar methods.. hope this helps and feel free to ask any additional questions :)
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