Question

How many g of ch3oh must be added to water to prepare 150 ml solution of 2m ch3oh?

Answer 1

Use the formula for molarity.
In the formula put:
                            Volume=150/1000=0.15L
                            Molarity=2
                            Molecular mass of CH3OH
Now the only unknown is the weight of CH3OH.
Find this value by putting the above values in the formula...THAT'S ALL

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Answer 2

The 30×15%343+90%44.45×32%goftd